What worries me is if future generations will be able to enjoy the games of today. Will it ever be feasible to emulate a PS3 to the level demanded here? Will my grandchildren in 50 years be able to play GTA 6 on a PS4 emulator? Processing power does not appear to scale to allow this, and there will barely by any of today's consoles still alive by then (also, I doubt 2060s television sets will have HDMI input).
As consoles get faster, accurate emulation becomes harder, but high-level emulation becomes much more accurate: programs get higher level, more dependent on library functions and (much) less on exact timing; hardware gets more uniform and programmable.
The Dolphin Wii emulator isn't perfect - it has the obscure bugs mentioned in the article - but unlike SNES emulators, it doesn't have a lot of game-specific hacks.
I don't think PS3 games use the same degree of hardware timing hacks so you can probably get high degrees of accuracy without the same level of overhead.