I am observing those discussions for quite a long time. Some argue, that pixelling is all about fun. I'd say, if we are plain honest with ourselves, it is just half of the truth. Creation might be fun and there's also a goal behind creation, mainly presenting the result, earning praise and good votes or even winning a competition. I would love to ask, how much fun would it be, if you pixel those art just for your own, without ever showing it to someone else?
That said, how good are we at loosing and receiving feedback or critics? Can we accept it and reflect on ourself, or will we just start denying it and by that starting to defend ourselves? So in fact people hide a lack at certain skills, instead of being simply honest. This hiding leads to drama, to excuses, to cheating with worksteps, to insults and defending. That is, why i love a good portion of transparency on the creation process. With accepting that skills aren't well developed yet, one enters the chance of growth, with hiding that fact, one will stick to the old routine and never change, but keeping up the drama.
So becoming good, means to accept own failure first, which applies for all cetegories, not only gfx.