Good question, with probably a longer answer than you were anticipating so I’ll apologize ahead of time;
Hate is probably the wrong word for it, just the conflicted feeling that people used it to download a bunch of “free” games. Please note, this is a philosophical stance and not really a judgement; I personally used it for digital backups which doesn’t strike me as remotely contentious (despite what some legal minds may argue).
But then what about gamers who missed out on these games and would otherwise never have a chance to buy them? Well, one could argue they could pay often-ridiculous prices on eBay or Amazon to get a hard copy, although no money would flow to the devs or publishers. However, it would ostensibly enrich those who already paid them. Yay, capitalism (?!?) please note sarcasm
But let’s say it’s someone on a budget. While nobody is entitled to video games, then comes the question of whether any harm is being done by making these vanished classics available. Offhand, I’d say typically not as the publishers are out of business. One could say those few enterprising individuals offering copies of ancient games for $200 or whatever are being harmed, but those are few and far between, and I’ll be blunt and say my heart doesn’t go out to most of them. What about publishers who are offering contemporary games, however? Would access to these free classics impede their business? Eh, maybe a bit. Then again, it might also encourage it just as much if not more.
So in short, every time I went there I thought about this conundrum of mixed benefits (and really, HOTU was wonderful in lots of ways) and potential pitfalls. In some ways, it also reminded me of my not-terribly-honest first forays into the “wonderful” world of file sharing and the realization of how that impacted various industries (again, some of which I cared deeply about, other parts not so much). So it was love/hate for me.