@Sibbo Of course. Actually, there are 200 million active certificates issued by Letsencrypt. Revoking them, 200 million websites would be down. 200 million websites all over the world, including US. I don't think this is a realistic scenario.
If you are worried about that, you should avoid any software developed in US. You should avoid any software which itself or its sources are hosted in US. Mastodon is available on Github, this is Microsoft. US authorities may force Github to shutdown or infiltrate the hosted sources with spyware.