Is this why Ian McCollum’s videos are getting altered? Over the years, he’s had many historical deep-dives featuring firearms from the Murphy’s auction house. In recent months, he’s been re-uploading those videos to cover their logo with the word “Morphy’s”. Even though the auctions are long over, I suppose Google counts them as promoting sales.
Full disk encryption doesn’t help with this threat model at all. A rogue program running on the same machine can still access all the files.