Vinyl really does come down to a case by case thing. Early Genesis is a perfect example because as far as I've heard, proper CD versions of those albums don't exist. So the vinyl is necessary. A band like Rush, they really got the CD transfers right the first time so you're better off with that (not the remasters!).Yeah, there are bands that are better on vinyl (because of the brickwalling, mostly - Nile, I'm looking at ye. What do ye have to say for yourself, young boy? The Annihilation of the Wicked CD's nearly unlistenable, honestly) and I wouldn't trade my vinyl early Genesis for anything, but let's admit it - CDs have their advantages, too (let's see you trying to play vinyls in yer car).
Personally, I think it's great if someone appreciates vinyls, but listening to/respecting only those is weird, and more than a bit hipster-ish.
Vinyl versions of newer albums are the same way. Sometimes they're comparable to the CDs or better*, sometimes they're mastered horribly. You can usually tell when a vinyl was lazily pressed and geared toward people who listen to vinyl as a trendy thing.
So yea, anyone who says vinyls are always better isn't actually listening to them for audio quality reasons.
*Every Maiden fan with a turntable needs to hear The Book of Souls on vinyl. It is the best sounding version of the album.