Criticising him for "not understanding his position" is just plain weird. If there's something that is really, really clear for all to see is how amazingly Mainoo does understand the position, which usually is far from a given for 19 year olds in the middle of the park. It usually comes a few years later. You can criticise his range of pass, his acceleration, etc., his game isn't perfect, but criticising that is seriously deranged.