I’ve been low carb/keto since 1/1/14, and have never checked calories, ever, except when testing with a CGM whether protein caused a blood sugar rise, and then only because I happened to be looking at protein.
This for instance:
I was super low fat (Pritikin), way back when, and used to input my data on an actual program (this is many years ago) on a computer. I ended up hating tracking.
Also, there are so many errors inherent in tracking calories, that I’ve given up on it. For instance, you eat a ribeye with fat. The only way to really know what you’re getting is to cut the fat out and measure it separately from the meat. Eating chicken thighs? What about the bone? What about the fat and the meat? Realistically, you have to separate the fat and the meat, weigh them together, and weigh before and after with bones.
That’s too much work for me. And since my wife makes a lot of meals, I’d have to ask her to weigh and measure everything. That’s going to go well, especially with two kids at home all day now. 
I did have multiple times while on the high saturated fat diet, where I only ate “lunch”, because I was so not hungry. That never happened before. I’ve always had a difficult time doing OMAD.
The issue was, though, that since the family eats at night together, I wanted to eat with them. Pre-covid, I could go pick them up at 7-8pm, and just come home and not worry about eating. Post-covid, they were home all the time, so I ate with them. Even if I was not that hungry, once I started eating, I ate a somewhat normal meal.
The other thing is that I physically look better. Way back when, I was a pseudo-bodybuilder and I still have remnants of that musculature. I’ve gotten back some of that now.
The other issue is that if I tense my stomach muscles, I can punch myself in the gut and feel solid muscle. That muscle is under a layer of fat, but it’s solid. I also do abs and surrounding areas three times a week, but main muscle groups like chest mainly one day a week. So, my abs and lower trunk are thick.
Without a DEXA scan, I can’t really tell.