TL;DR: YouTube sends a Cease and Desist email to the Invidious team for API abuse (even though they don’t use the API.)
I also want to point out (since nobody else has) that YT has done shenanigans like this in the past. Invidious is not going down without a fight.
UPDATE
As of 2 weeks ago, Google has begun blocking multiple instances from accessing their services. This also includes my own instance and appears to be done alongside the C&D. (Note: I have not received one yet.) I’m currently playing whack & mole with Google and will be moving between several different servers. Some others are going through IPv6 addresses (which didn’t work for me.)
Ugh this is going to break Freetube :(
Freetube is already broken for me. I only use it as a centralized following channels plataform (to get the updates from the channels i follow) and then get the indivious link and open it in the browser!
still works for me
the guys at youtube are dumb
It goes higher than YouTube. It goes way up to the highest echelons of Alphabet itself.