Bruno fans vs Pogba fans - Why?

See this all the time online. Bruno fans slating Pogba, Pogba fans slating Bruno. Why? It makes no sense and is a very new trend. I don’t remember Cole vs Yorke or Keane vs Scholes. Who cares? Why does it matter? We’re all United fans, I don’t understand why we have these [insert player] FC factions within our fam base. I see it with Rashford & Martial fans too.

Anyone else getting annoyed by this? Either support the club or don’t, not just certain players.