At some point, you would think it became irrelevant. If you can play there at 5’6 or 5’4, why not 5’3?
I have tried suggesting previously that the amount of players being as small as Gomes can be explained by probability.
Less than 2 percent of grown men are as small as Gomes. Initially that would imply that 2 percent of all professional footballers should be his size.
But in at least four out of elleven positions (goalkeeper, central defenders and strikers) you cant be that small. You could probably also argue that being a full back would be difficult for a player that small. That could imply, all else equal and height irrelevant in all other positions, that less than 1 % of footballers should be expected to be that small.
Furthermore, small footballers do obviously have a disadvantage in more positions and roles than taller ones. While a footballer at average height with limited ability could be a limited «utility»-player (given brains and effort) used ad-hoc and tall players could be used in a system for their aerial threath, small players need to be that talented magician. Often the player running things at the centre of the park. And that could explain why there is so few small players.