TwoSix
Everyone's literal second-favorite poster
Sure, I agree with all that. It's fairly obvious that the OSR principles written up in the '00s and '10s were codifying a prevalent strain of play that existed during the '70s-'80s.The principles of the OSR as written by Ben Milton, et al are new, sure. The mechanics that lead to those principles are not. All the mechanical hallmarks of OSR-style play exist in the early editions of D&D. You don't need a blog that says "Combat is a fail state" to recognize that PCs are fragile and monsters can easily kill you, so you should generally avoid combat and think of clever ways to win. Likewise with a bit of signposting traps and instant death. Likewise with skilled play and planning vs blindly charging into combat. Likewise monsters as puzzles given how many monsters had bizarre weaknesses combined with resistance or immunity.
The only time it causes confusion is when people say things like "But we didn't play that way back then at all!" Which I'm sure is true, but also doesn't really mean anything. People were playing in a whole lot of different ways.