Exactly. It's why I'm such a Triangle fanboy. If I had an insane amount of disposable income, I'd tell DC that they'd never have to pay for a Superman comic again, and just ask them what they'd want to all come back and write whatever the heck they want. lol
It's just great in general. I do think those writers could have put out the same quality of work in any era - so while I wouldn't say "in spite of," I don't think Post-Crisis was a necessary element, specifically.
Seconded. I'd say start with MoS and work your way up (the early Byrne era, imo, reads much better as backstory since you know it's headed to a good place, and that Superman will grow past the limited mindset Byrne put him in).
To each their own, of course - I can certainly see the allure in that, and I do also enjoy the Pre-Crisis stories very much! For me, I do like the "rich history" angle more; partly because it's more true-to-life, and partly because so much can be built from it (if the writers are right). It can be tricker to pull off, but really hits the sweet spot for me when it does. Having that rich history also makes the back-issues more story-valuable; I never would have actively sought-out all those issues to the degree that I did if they weren't part of the history.. and I do think there's a charm to that.
But I also collect studio sessions of recording artists I like, so... I'm just kinda like that. LOL!