I don't care. Genuinely don't.
I see innovation. Someone was passionate enough to make their own PC BIOS and someone else was passionate enough to see there being a viable market for ultra-compact DOS machines that they invested into designing one commercially. In fact against your own word, here's two nice things. Here y'all are taking it and ignoring what's been created because you don't want someone's feelings to be hurt. Someone who posted the source code for their work in public.
Every single one of us on this forum do not comply with copyrights, even though it's written in the rules and we'd never copy that floppy and dump that BIOS, right? We have absolutely no reason to respect Sergey's either when we buy this new product which is his work, just without his name on it. We can, but then you are the equivalent to the person who lurks around the mall at Christmas telling children in line at Santa's chair that the dude up there isn't really Santa.
Enjoy the product.
If you wish to appreciate Sergey's efforts you can. You can compliment him for starting the project, donate financially if that's his thing, acknowledge that his work is being used without acting like an absolute loser or there's an amazing idea since this is using his older work: motivate development of a fork with his latest BIOS that you can flash to it. Now you get all the features and bugfixes of the latest BIOS, plus he gets his name back on the screen.
Or, just act like [AN AMIGA FORUM] or [AN APPLE FORUM] where nothing gets done and key innovators are left to stand on high towers, preventing anyone else from making better products.
[drops mic]