The problem with getting PLQ that early in some people's careers is that someone with only 2 or 3 years in, especially in the reserves, is not really experienced enough to fill that role and accept that responsibility. That is how most of my peers see it.
The fact is, MCpls and Sgts lead through their experience on the job. Ptes and even Officers turn to them for advice and guidance. However, let's say you give me my leaf. I have very little experience in my trade - (a mere 3 years part time) - you really do have to know what you are doing and have a lot of knowledge. I am not yet in a position to take charge of a handful of other people especially when I have so much to learn myself.
It's not that I can't lead, or that others can't lead, or that we're all garbage soldiers, it's that many of us being put on PLQ this early are far behind what MCpls should have in terms of practical experience, which is only truly gained thru time in or operational tours. Ideally I'd want 5-8 years in uniform and a tour before I be given the privilege of junior leadership. But with the turnover and rate of recruiting, I might be required to do it as soon as next year. That is why a lot of us juniors are uncomfortable about doing it so soon.
Commission isn't bad, but still, some people like myself are NCM kinda guys, not really suited for the officer personality. Some of the OCdts/2LTs I have seen are complete turkeys, but thankfully they get put in their place. I'd like to start over with the exp I have now, and I think I'm in tune with how the rest of my soldiers think, but I'd rather be a junior instead.