This may be a little off the topic of OMAD specifically, but is relavent to diet goals in general. I always thought that typical recommended ideal body weights were total garbage because they can be so wildly inaccurate. Out of curiosity(i don't actually use calorie counting or meal plans) i used the TDEE calculator and based on my results my ideal body weight is about 17 pounds higher. honestly this is preposterous, i mean what do i need that much weight for? with the way i am built, i would in reality have too much weight at that number unless i gained 17 entire pounds of just muscle, a goal i do NOT intend to reach(I want to gain a bit of muscle but not but a few pounds at most) i have no desire to have much in the way of hypertrophy(which is certainly unnecessary for health). it can also go the opposite way. lets say you are a bodybuilder and weigh far more than an average for someone your Height and whatnot. Your BMI will call you obese even though you may have 7% Bodyfat.
i reccomend reading this article about the issues with BMI if you care to take the time: Why Body Mass Index Is Wrong for So Many People
i reccomend reading this article about the issues with BMI if you care to take the time: Why Body Mass Index Is Wrong for So Many People