I get the argument about scaling skills, but exactly like 5e and exactly like 1974 aren’t the only two options. Some of the OSR games use something in the middle, but some seem to have mimeographed (get it?) the original books.
I hear ya. That's why if you look back at my list, above, one of my recommendations is to try some rules-lite or indie games if you want to explore the space a little.
The thing is ... a lot of the OSR is devoted to recreated a very specific type of experience. So you have two things you want to keep in mind-
1. Compatibility is a major plus. Sure, there might be a few obvious changes (such as ascending armor class), but for the most part the people who make and play these games want to be able to play all the classics. Why run OSRIC (for example) if you can't find a copy of T1-4 and have at it? There's modern material that's great, too, but it's all part of the same ecosystem.
2. A lot of the mechanics play into the "feel" of the game. A primary feature/bug of OSR games is that they are level-based, and not ability-based. The ability treadmill that was introduced in later games is absent in OSR games- for better or for worse.