I used to eat 6 meals a day. I was bulking and eating way to much (7-8k cals) but was gaining weight and strength. I learned a lot and smartened up. I can say that IF does work, I started a 16/8 and for the first month or two nothing. You have to get the ball Rollin per say, you can't switch from bulking to cut and see big results while gaining muscle. It's insanely difficult to adjust your diet perfectly like that. But as I dialed I my calories and stuck with my IF regime, I cut down 30 pounds over 5 months. Yes I lost some strength, I also had to stop lifting for 2 months due to injury. But I feel better than I did before, and when I was recovered and healed, I have come back leaner healthier and stronger than before. IF is great. Eating all day is not the way to go. And yes you can bulk on IF.
I could type for another 15 minutes but I'm no know-it-all. That's what I have learned and experienced. Different diets for different applications, but I believe IF is healthiest and the best way to meet any goal.