As far as I can remember and tell from searching around at the moment, they dropped effectively all VPN sponsorships.

https://www.reddit.com/r/LinusTechTips/comments/y1dcef/did_ltt_drop_pia_and_replace_them_with_nord/ (yes, it’s reddit, some people might see it as a dirty word at this point, but still valid)

https://linustechtips.com/topic/1411170-thoughts-on-private-internet-access/