ESU is inherently bullshit. So they're going to make security upgrades for the OS millions of people are using, but you only get them if you pay? Even though they're committing dev time to make and deploy them, the SECURITY upgrades to the OS yhat millions have already paid for?
What a grift. Either you're paying ESU and there's no dev work (free moneyyy!) or it's literally a 'protection fee' for dev work they're doing anyway (nyeehhh nice PC ye got there, be a shame if we extorted you for it)