I guess they mean the tweet of the Proton CEO, which was blown far out of proportion and without context and caused a sensationalist shitstorm on Reddit.
If you want a detailed write up: https://scribe.rip/@ovenplayer/does-proton-really-support-trump-a-deeper-analysis-and-surprising-findings-aed4fee4305e












Half true.
This post is about VPN. And Proton VPN is still safe.
Your info/news is on Proton Mail. In this case Proton was legally obliged (Swiss law) to give out identifying data for the owner of a known email address. The owner used a credit card and they had to give up the credit card info. The content and communications inside their email account is still private and was not given out. If they had used cash or crypto for paying, proton might have had no information to give out to the authorities. And again, they were obliged by law.