Yes, there is, to the ordinary football fan Bellerin is part of two halves - footbal vs fashion, weird clothes and longer hair. The 2nd part was presented to the public exactly when the first part started to deteriorate. You can see how the two can be related, right? The more the 2nd half grows, the worse the first halve becomes. There is nothing childish in concluding that the 2nd influences the 1st.
He was better before than he is right now. There is obviously a reason for that. There isn’t a bigger and more obvious alternative for that reason than his passion and interest in his “hobby”.
The idea of a hobby is to let loose, relax, pass the time and enjoy yourself. But it is not usually something you fixate, obsess, or dedicate yourself to unless you plan to monetize your “hobby”.
First of all that, as well as the other pseudo-satiric examples you gave in another post, is not at all comparable to the way this guy presents himself, carries himself and markets himself and his interests. I am willing to bet you no one else in a 1000 people knows Bellerin was studying for a marketing diploma, I can’t imagine how you’d expect criticism in such a circumstance.
You are shifting the point people make in order to make the criticism worse than it is. Poor Hector, criticized for having a life outside of football. It is OK to have a life outside of your profession, for as long as that doesn’t interfere with how you practice it. Stands for any profession.
Yes, the carbon copy of his current behavior would be totally OK if his performances were stellar, because obviously his behavior wouldn’t hamper his performances.