Hm, I have a variety of feelings about this.
I can see why people might hypothetically balk at the idea of a crowdfunded concert. But the truth is, assuming that concerts work the same as other products, ticket sales have always been a sort of crowdfunding anyway. If no one bought tickets, the expenses of the show wouldn't be covered, and possibly it wouldn't even run.
There are also the potential drawbacks of a live vs in-person event. Given the situation, I think those things will be the best they can reasonably be.
Those things aside, there are a number of things I love about this.
To begin with, I've always been a bit sad about the fact that there must be a lot of people who want to go to a concert who aren't able. Because being a fan, being a part of vocal synth culture, can be such positive experiences, and because going to a concert is (I think) sort of a milestone moment in the minds of many fans, I really, firmly believe that as many people who want to go should be able to go as possible. This sort of event makes that possible. To be honest, I'm not sure if it's the first time, but I don't think I'm wrong in saying that official, live-streamed, worldwide-accessible concerts happen RARELY.
Additionally, I'm sure lots of people here know the feeling or have heard it from other fans of something that comes from the Japanese media scene: the idea that Japan always gets the best stuff, stuff that the rest of the world doesn't get. I would assume the reasons for this aren't always out of some kind of stinginess, but are probably more logistical/financial/business-related; after all, franchises from other countries don't always go out of their way to sell their products overseas, either. To be honest, there is a lot of stuff that goes on in Japan even related to the Cryptonloids that doesn't make it abroad. But for as much of a challenge as it probably is for CFM to put on concerts in foreign countries, I have to appreciate how they've taken care of us throughout all of this Expo/COVID thing. They went through all the effort of rescheduling the events twice, losing some money in the process, and then, when it did eventually become too much to continue with, they expanded the use of the very new online event genre that they seem to have been piloting in Japan and tried to bring that overseas. I know their handling of Expo must've at least had to pass muster in terms of feasibility from a business perspective, but the entire sense I get is that they really know and feel something for how fans have been looking forward to seeing these concerts. That's something really special.
For me personally, those things make this a good cause. I'm looking forward to the crowdfunding details; as long as nothing prevents it, I'd like to contribute.