What's the motivation for blocking VPN read access for this and other services? Are AI scrapers using commercial VPNs to get around rate limiting?
Could also be spam/abuse prevention. Credential stuffing often goes through VPNs, signup over VPN is a strong signal for future abuse or issues in various ways.
I'd like to like that won't come back, but voting rights for women are back on the table, apparently, and SoundCloud is apparently worth age-gating, so I guess not.
VPNs often use providers with excellent peering and networking - the same providers that scrapers would want to use.