Nope. You are not wrong to block him. Life is too short. Oh those proverbial “good intentions”. As you know saying “road to he$$ is paved with good intentions”. Life meant to be enjoyed, not be full of suffering because some dude wants to lecture you and thinks he is “know it all”.

You are too busy! When I was in grad school and I did mine in the evenings after work, I even cancelled cable because I had no time for silly things and I only spent time with important people/family and my important hobby etc. The rest had to go. Certainly this dude got to go