Utau may have it's problems, but until another piece of software can exactly fill its shoes it will always be around.
There have been a few programs like DeepVocal that have come along, but the people who enjoy developing their own voicebanks decided to stay put with Utau for the most part. I kind of get it, DeepVocal does have some major engine noise issues, but I highly doubt that the developer would have been against working with the community to improve it (which given that the Utau community has developed rendering engines that outshine anything Ameya has made, I don't see why that would be too much to ask of the community in this case). But now he's stopped updating his twitter and I'm not sure when the last DeepVocal update was, so I'm pretty sure we missed our chance at that being the Utau killer we need.
Plus there is no legal way to replicate some of the most popular voicebanks on another platform, so it'll have to stay around just for those banks.
True, but since Utau is a closed source program and probably won't be compatible with the next line of Windows Operating Systems, there's a possibility that people are going to have to resort to some less than legal methods to keep Utau working as well.
they do not have the obligation to update it or change it's license
The thing is, they're not obligated to update it. They did it for fun and released it for free.
Is Ameya still having fun with Utau? Have they done literally anything with Utau recently? They may not be obligated to update it or make it open source, but the users aren't obligated to keep using the software either. But for some reason they still do. Even when there are other options which have a much better chance of being continually updated if they receive support from a community, the community would much rather continue to huddle around Utau until it literally ceases to function.
UTAU wasn't gonna pay Ameya's bills any time soon,
Citation Needed? There are people selling voicebanks for the software and magazines published in Japan teaching people how to use the software. If Ameya can't find a way to monetize Utau without charging people up front to download it, then he's not very smart.
Personally, I find it very hard to believe Ameya hasn't successfully monetized Utau considering that Teto and other popular Utau voicebanks continue to pop up on KarenT and in Piapro related shindigs. Not to mention the magazines dedicated to the software and other instances of people having to pay for the right to display the software's logo at the very least. I find it much more likely that Ameya just doesn't do any work on Utau anymore because they simply don't need to. The community maintains it's cultural relevancy for him. They keep developing the plugins and rendering engines and new recording methods and hacks that make it clear they could easily combine their efforts to create a new software of their own (or do you seriously think a piano role is the hard part) and dedicating it to keeping the corpse of Ameya's software afloat.
And who says Utau doesn't have a future? Its future is being crafted by the people who care about and invest into it; if not Ameya, then its userbase.
At some point, Utau is going to stop working on contemporary operating systems. Maybe that will be the point when Ameya finally steps in to develop an update. If not, the userbase will have to develop even more workaround to keep the software working. This on top of the workaround it already requires to get the software working on a non-Japanese machine. And the plugins to give the software much needed quality of life features. At some point, I wish people would realize that all these hoops aren't worth it to anyone who isn't already heavily invested the vocal synth fandom and/or in the maintenance of Utau.
The people keeping the software going will lose interest and leave at some point, and nobody is going to fill their shoes because getting the software up and running will be too much of a hassle. These voicebanks you're scared to see become irrelevant WILL become irrelevant because they're trapped on a software that a few people have nostalgic memories for and nobody else wants to touch.
Anyway, my unpopular opinion is "everything is fine and Utau doesn't need to update" isn't an unpopular opinion and I don't understand why everyone feels the need to keep saying it in this thread as if it were one. This is supposed to be an unpopular opinion thread, not an "I saw one person say something I disagree with on a youtube comment and now I need validation" thread.