To be fair, that Wipeout clone demo also runs fine at full quality on a Core 2 E6400+8800GT. That's also before noting that on that old rig the demo never went above 20% CPU or GPU, which still says nothing about how well optimized the demo is.
Of course, you're absolutely spot on in that all this is stuff non-web devs were doing over a decade ago, the real benefit of web technologies not being that they're as capable as native solutions, but that they benefit from the web's ubiquity.
Of course, you're absolutely spot on in that all this is stuff non-web devs were doing over a decade ago, the real benefit of web technologies not being that they're as capable as native solutions, but that they benefit from the web's ubiquity.