It doesn’t really do anything other than (potentially) verify someone or an organization really is who they say they are. It probably matters most for well-known folks or orgs that you need to know are real. One example is how confused people are about Mark Hamill, who did move over to Bsky, because there are so many impersonators.
Another example is the US Consumer Product Safety Commission. I can verify they are who they say (and trust their posts, hilarious or not) because they’ve used their gov site to verify their account.
I felt this way as well. That top tier of subscription maxes you out, and they give no incentives. I assumed it was because they shrugged and thought, “They can’t level up, so we have them where we want them. Let’s upsell the others instead!”