@Fanaelialae
I agree with what you wrote, which is why I think that efforts (like the one by Sacrosanct) to make an OSR game that is more explicitly welcoming to newer players and/or inclusive is a great idea.
I would say that there are multiple impulses inherent in OSR, and not all of them are great. On the plus side, there is a lot genuine joy- the desire to share experiences, the desire to share a certain playstyle (or modality of play), the desire to share a lot of great material.
On the minus side, there is a reactionary impulse; there is both a rejection of the modern (in the sense of the stereotypical, kids/lawns etc.) and a yearning for the nostalgic days of yore; the idea that if we could just get rid of the hit point bloat of 5e, we would also restore our lost youth and get back to the good ol' days of 8-tracks. Obviously, that's all untrue, but nostalgia is a helluva drug.
More worrisome are those who explicitly reject the inclusive aspects of modern culture, and believe that the old ways of D&D, when the game was primarily white and male, somehow were "better" and use OSR specifically as a counterpoint to the diversity we see today. That's not something I can ever agree with.
I think that there is a lot that is valuable about OSR, and it's definitely worth selling these concepts to the modern market and to new players. I don't think it will ever be more than a niche; after all, there is a reason for the success of rulesets such as 5e. But to keep it alive, we have to accentuate the positive, the joy, and the wonder.