yeah almost a decade mastodon has launched and still no traction compared to bsky (even had an invite system) and still surpassed mastodon in active users.
the problem with decentralization is that it's a squishy moving target with no consensus definition, heuristics, or even context. I tune out when people talk about it in any context except market shape. UX good. onboarding good. credible exit good. tamperproof did method good. work towards those!
I think you're taking the pragmatic approach.
Many people lost interest in Mastodon when step one was: "Right, first of all you need to pick an instance."
With Bluesky the decentralisation is there for people who are interested (I'm running my own PDS), but out of the way for people who aren't.