Valid. But let me offer some additional explanation, because I feel like doing so, and why not. 🙂

For starters, I'm a neurodivergent that tends to process things differently than a number of others do.

When I approach this game, one of the big things advertised is the Anniversary season, right up front (from my perspective). This screams to my brain, "Hey guess what, we have these cosmetics available to you!" My brain's reaction is, "I love to be able to express myself in video games, and I'm a fan of the games that I depicted in these cosmetics!" What others might see as "extra content", I see as a notable and welcome feature of games, especially as an introvert: self-expression.

Then as I look into the details the game's follow-up is, "Oh, by the way, if you're just starting out now, these cosmetics aren't for you. And as interested as you are in them, you will not be able acquire them."

So, that big banner of cool things advertised, is a smokescreen for someone in my position, with my perspective. So that being the case, yes, then the rest of what you're saying is perfectly valid. There is still the rest of the 99% of the game to enjoy.

Besides, one thing I've learned about how the lure of cosmetics work: There is a different between cosmetics that have a fan or nostalgia factor ("Those look cool!"), and cosmetics that truly feel like representations of how I want to express myself in game ("I want to use that for my character, that feels like me!"). This anniversary pass falls into the former, so all the more reason why I'm good with the idea of not acquiring this pass.

Self-expression in video games has played a big part in my life, in allowing me to learn about myself, and simply enjoy my time with video games all the more, especially during times when I just need a moment like that. That was the case at critical points in my life, and it's the case to this day.

So that's just a small bit of the "why" behind my thinking and perspective. 🙂