Just a noob hobbyist bro. I still have much to learn from the gurus here.
AF to me is over-rated. I was so afraid of taking the plunge into MF initially cos I am genuinely worried about all my photos being blur. However once I bought my first Zeiss (50MP), I found that I love my photos even more! In the end I have more keepers compared to when I had my EF lenses. Ended up I sold all my AF lenses and only have two MF lenses in my kit now. That's why "to hell with AF!"
I helped my friends previously to take some photos at their weddings. One was using AF and the latest one was MF lenses. No points for guessing which set of photos I like more.

I think it can be done to use MF for pro work. Some people like the Leica guru Thorsten Overgaard even take fashion shows with his Leica RFs and the effects are fabulous.
No right and wrong I guess. The best tools are the ones in our hands so just go out and shoot! To hell with AF/MF!