Earlier quoted context omitted.
I genuinely do not understand the artist in the replies who says this has destroyed their work. Can't the website require you to click/tap once to start its thing, without negative impact? I feel like I must be missing something. (There's a mention about not updating code for existing work, which might be it?)
So I tried to explore the site as a firefox user, this is the type of stuff I get: Big warning and messages to install Google Chrome [1][2] without even then attempting to give it a shot in firefox for some demos from what I can tell (I may be mistaken, perhaps firefox is breaking still). Given the impressive amount of work they put into the site, it's unfortunate a few lines of feature detection and polyfills weren'…
The artist reaction makes him come across as a primadonna. It's not like there aren't thousands of art projects made from Java applets that either flat out don't work anymore or require an absurd amount of manual steps to get working. The effort he'd need to make to keep things working (which is generally a given for so much of software) is quite a bit less than those artists who banked on the Java (or hell, even Flash) horse.