You can't create a usable Twitter account without providing a phone number, however, so this is effectively a meaningless gesture.
Twitter does not want Twitter users to have privacy or pseudonymity from Twitter.
Twitter does not want Twitter users to have privacy or pseudonymity from Twitter.
I could use one of the European numbers but given my experience with how sensitive Twitter is to sketchiness I'm guessing I'd get more random phone number verification requests.
This move is actually hilarious considering Twitter's policies.