This extension has saved me SO much time and kept me from getting trapped on Youtube, stuck in the endless algorithmic feedback loop that once haunted my free time. Now I don't even have to fight the temptation, I just block what's distracting me and watch only what I really wanted and nothing more.

Only thing that's missing is the ability to disable endless scrolling, that way one could still allow certain features such as home feed when they want it, but only have a limited selection so it isn't an eternal inescapable hell.