After further investigation, it appears that when making requests to archive.today, they are redirected to RT only when the referer header is set to removepaywall.com (429 response). If the referer header is absent, the request resolves normally.

Could archive.today be compromised? Or is it a networking issue?

All previously posted links using removepaywall.com (i.e. on X) are now directing to russia today.

To reproduce, you can use this curl command:

curl -v -e "https://www.removepaywall.com/" https://archive.is/newest/removepaywall.com

This will return a 429 status code and a redirect to RT. Without the referer header, the usual response is returned.