Like I said - you do you. But, don’t recommend an approach to other people that isn’t going to work in most scenarios, and could cause issues based on “Hey my brother had this interesting approach” while you’re turning around and ignoring advice given by a lot of experts in the field. You are quite literally cherry picking an n=1 and recommending it to a broad group.
“My brother recently had the idea to do a set calorie amount (1800 per day) + 50% of what he burned during exercise. I think that’s a good approach for an average sized male trying to lose weight, and for exercise that’s around 2 hrs or less.”
I haven’t given you anything incorrect, I stand by what I said - that advice will be bad for most people in most scenarios and it’s pretty easy to show why. My advice - listen to this, start here: