Here’s the idea: Deprive YT of their revenue and maximize their expenses.

Browse the site as usual, but never watch any videos. Instead, download them at maximum resolution. You’ll skip all the adds, and take the maximum amount of bandwidth.

The business stays profitable as long as people watch ads and don’t use bandwidth anywhere near as much as you could. Download a bunch of very long videos just to check if they’re worth watching. Ignore anything shorter than 10 minutes.

Make a channel and upload a bunch of long videos. A dash cam should be a pretty good source of data. Make sure your videos are so boring that even bots don’t like them. These videos are essentially just dead weight in the servers, but uploading them costs something anyway. Also, the storage isn’t free either, so 4K is the minimum.

You could also try reporting random videos and comments here and there. I’m pretty sure no human ever sees those inputs, but some machine learning model might. Messy data isn’t going to break the system, but you could make that speed bump a little higher.