People give their credentials every day when they buy tobacco or alcohol when asked.
People give their credentials and identifying information all the time to check their bank account, buy products, groceries, everything you can think of on the Internet.
Don't worry, there will always be some scummy news stand or store you can buy your porn at with cash.
If you think this stuff stops with pornography, you're being naive.
Florida's legislature already passed a low banning all social media access by minors. Governor DeSantis wisely vetoed it as the enforcement mechanism required the same sort of third party verification demanded by Texas here and adults posting anonymously on social media would've no longer been possible.
It wouldn't take much of a stretch to rope all forums such as Free Republic under the same social media definition that Twitter falls under.
No thanks.