Requiring a phone number doesn't alleviate any of these problems. It's just a tax on the 'middle class' of the internet, while the 'rich' botmakers can easily bypass it.

https://techtrickseo.com/bypass-sms-call-phone-number-verification-code-any-website/

It's a possibility that Parler's hidden agenda is identifying and corralling conservatives

Requiring a phone number doesn't alleviate any of these problems. It's just a tax on the 'middle class' of the internet, while the 'rich' botmakers can easily bypass it.

https://techtrickseo.com/bypass-sms-call-phone-number-verification-code-any-website/

It's a possibility that Parler's business model is just collecting phone numbers of conservatives. It's a valuable treasure trove they're sitting on, and lord forbid it falls in the wrong hands. It may already be.