People like this are so toxic that companies must eject them. They have no real added value, they merely harass those that should be helped to grow and learn as they evolve in their positions. Software engineering teams need collaborating peers and mentors not bullies.
What makes you think that a person with a degree in theoretical physics who is making their livelihood writing code is qualified to teach functional programming and more so address the (well justified) peculiarities of FP you are raising here?
Really dude, you got an undergrad in CS and you will teach us all these topics? I am exhausted by the available curricula that would make me a computer scientist, data scientist, machine learning guru, Python ninja and whatever else. All that by watching videos, attending online programs, mostly made by people who have zero content credibility yet they are able to put together a bootstrap website and search YouTube for videos.