Imho, your take isn’t as “petty” as it is goofy and unproductive. I’m saying this as someone who has rejected social media entirely and deleted it off of my devices like 10 years go.
I don't think it's petty, goofy or unproductive to feel uneasy in a once-open place that put up walls, gates and signal-heavy signage.
But even before our present-day Compoundia, Twitter was losing it's way. Prioritizing engagement over users is a bad road.
Information should be accessible to anyone anywhere on any device, with or without an account. X doesn't fit that role.
Same reason I hate when companies have a Facebook page and nothing else.
The OP says in the signup that if you meet up in person and tweet a photo, he'll re-tweet you through the meet.hn x handle. Sounds benign, and it mostly is.
I'm just personally uncomfortable supporting an otherwise good cause wherein x.com gets more attention and data about the good folks on HN, because I really don't trust them and their data governance.