Thinking about it a bit more, I think Prusa is simply struggling to maintain a foot hold in the industry and remain open source. All the complaints are about the printers. But Prusa does more than just printers.

Prusa forked Slic3r into PrusaSlicer and continuously deliver great improvements and still keep it open source. If you go to the PrusaSlicer page, their github link is right there. And they support Windows, Linux and MacOS. They also attribute Alessandro on the website and the launch screen. The Prusa github also seems to have all their projects and software.

Bambu Labs forks PrusaSlicer and the github link is no where on their site and they only support Windows and MacOS On a piece of software that already had Linux support and the only acknowledge it's a fork on the github. Fortunately the github is still the 2nd link in google. But they aren't really committed to releasing their work if they won't even link to it. And their github has like 2 projects.

Prusa created printables.com to clean up the mess that is thingiverse. Creality created Creality Cloud and then just steals your models even after Naomi Wu advised them not to do that. Prusa runs competitions, has prizes.

Prusa seems to want to keep things open source, try and create a community. But like most open hardware, it's expensive relative to the competition.

As an Apple user, I completely understand the need to not mess about. But I also like to use opensource where possible. Especially for things I want to tinker with. So it's really surprising to me that what seems to be the majority of the hobbyist 3D printer community, a community that tinkers by definition, wants more closed, less repairable hardware. And more propriety software. They just want the cheapest appliance they can get for the money. I think this is what broke my brain. We started open, and could remain that way. But we'd rather not.

It's hard to fight against the might of cheap Chinese manufacturing. I hope Prusa works out a good strategy to survive before we end up in a situation where all the 3D printers requires Windows or MacOS and a login to some cloud service that I don't want.

I believe people should be free to choose whatever license they think fits their project best, and tend to trust their judgement and goodwill.

That said, I think strongly copyleft licenses even in commercial hardware are underappreciated. Arduino is the great example: sure, it has got tons of clones. But that's kind of the point: that other people make it, and get more people using it (Arduino themselves focused on quality of their in-house produced, and also goodwill of customers). If you have it open source, people can actually copy and modify and improve it, that's the spirit -- although I'd agree it may be tough to secure enough funding from first party product sales to sustain development of the project. In that case, I'd suggest looking for a stable stream of sponsorships/donations, through platforms like patreon or liberapay. And of course, if you're a user, make sure to donate!