Yup I hear that. I know they use different video titles because they’ve talked about that on the show a few times, but having worked in a very SEO-driven business myself, I would be surprised if they don’t pay attention to all of the metrics - including numbers of unsubscribers (Which you can get a breakdown of per video) and things like that.
In this line of business, there’s always some amount of churn/attrition, you literally cannot please everyone when your audience is tens or even hundreds of millions of people. The best you can do is aim for the net gain/growth and when you don’t hit that, learn from it.
You’re doing the right thing by unsubscribing, if you’re not enjoying the content or engaging with it, that’ll literally tell them as much. The only issue is if that same content is engaging with more other people, there’s a good chance they won’t miss you as a subscriber. Which sucks, but that’s just business. It’s one of the reasons why so many youtube channels have gone downhill, because you end up invariably chasing the numbers and the numbers are decidedly mainstream. LTT is firmly in that camp now.