Nobody is looking down on you, and there is certainly nobody here is looking down on newbies like you suggest. You came for some advice because you thought your pleco was "pregnant" we have since discovered that you are not feeding them correctly and your pleco had bloat. Seems to me your getting defensive because it's been pointed out to you that you may have been doing something wrong. It's been suggested that you change the diet.
You cannot guarantee that your plecos are sticking to their own food, trust me, when the lights are out they will be all over the tank, get some moonlights and you will see for yourself. You came here for advice, you can take it or leave it, but don't get antsy because you don't like what you hear. There are many people on here that have forgotten more about plecos than you will ever know - take my advice - take their advice, they know what they are talking about or you'll end up coming here asking for an opinion as to what may have killled your pleco!