I think it's because there's a level of bullshit a lot of older RPGs had that newer RPGs don't. Most of the bullshit was time consuming and tedious. "Go here for no reason at all and clear out all the monsters." "Spend an hour grinding so you can beat that one boss." "Random battle every five steps or six steps." At 12 and 13 years old we didn't mind. First of all, it was all we knew. That was the standard at the time so we put up with it even if we didn't really enjoy those aspects. I know I personally never liked random battles. Second of all, we had lots more time to kill so those time sinks weren't so frustrating. We can still go back and play older games and enjoy them just fine. But the flaws just seem to be a bit more noticeable.