Centralization on its own is not a deal breaker. Wikipedia is centralized.

Corporate/business ownership on it’s own is not a deal breaker. There are many business mastodon instances: https://mastodonservers.net/servers/business

It’s the combination that is a deal breaker. Corporate AND centralized. We’ve seen this movie before. It’s a predictably boring story that ends with enshittification.

Is anyone arguing at this point?

It’s not decentralized. There’s no argument.