Twitter has verification which is "anyone with spare change who wants to shout louder than others".
Now it just means someone paid some amount of money. They're "verified" in the sense of like verifying the email address you used to sign up with to an olde timey web forum, and maybe that you're probably not an absolutely minimum effort spam/scam bot. However the "verified" checkmark is still basically useless because it doesn't verify an identity or credentials anymore, and it's easy enough for bad actors to get the checkmark to then impersonate some brand or website or whatever, and have their posts get privileged by The Algorithm.
So, previously "verified" status was useful for people to be able to tell that the posts they're reading are really from who they think they're from. Now, "verified" status means that bad actors and bad posters get their posts boosted ahead of normal posts, so the replies to any mildly popular thread are going to be full of attempted scams and tepid takes. It's become completely useless for its original purpose and makes content discovery worse.
Depends on what you mean by "meaningful". Threads uses Instagram's verification, which, like Twitter's, is now pay-to-play[0].
[0] https://about.fb.com/news/2023/02/testing-meta-verified-to-h...
• Notable: Your account must represent a well-known, highly searched for person, brand or entity. We review accounts that are featured in multiple news sources, and we don't consider paid or sponsored media content as sources for review.