This was much less of an issue back when you couldn’t open a bank account in someone’s name from halfway across the world. Phishing and identity theft were impossible to pull off until companies started trusting phone services and later the internet. You needed to show up in person with a realistic fake ID to do anything malicious. What else would you do? Spend (converted into modern currency) 25 bucks a minute on an international call to scam someone?
Now that nobody meets face to face for stuff like cashing a cheque or even ordering a large quantity of groceries anymore, the few bits of personal information we can use to prove our identity are the only things protecting us.
uBO effectively blocks every ad that can be blocked. Youtube has started to insert the ads directly into the video stream and that’s not practically blockable.
Combining multiple ad blockers can interfere with ad blocking, though. Try creating a new, temporary profile with default settings and no addons, installing uBO, and see if it’s still broken.