It's fine if you don't mind losing legit users and keep the more motivated spammers. Phone numbers have been so abused that it's a leap of faith to give it to

It's fine if you don't mind losing legit users and keep the more motivated spammers. Phone numbers have been so abused that it's a leap of faith to give it to an additional service hoping they wont go to town with it. Then you'll find a number of services that will attribute virtual numbers that can receive SMS, so it won't stop motivated spammers/scammers (tbf nothing will ? but now you have them "verified")) All in all it feels like a losing proposition to me, but I don't know your situation.