First use Google Takeout to download everything (if you don't have it all backed up already.
Second, Google/Youtube has made it clear where they stand in regards to censoring content. If you want to keep your youtube channel then I recommend using some other service (whether it is DTube or something else) for more controversial content or anything you think Youtube might remotely consider controversial. The only way Youtube might decide to change their policies is if more people leave or stop watching.