As far as i'm aware, paying for your season ticket to watch City has allowed you to do just that. It's not like all games were called off and everybody forced to watch an educational video for 90 minutes instead. I have literally no idea why you've found it such a distraction. A person who genuinely had no interest one way or another could quite easily have just ignored it. I doubt the campaign was barely noticed by my dad for instance, which is fine, as he genuinely wouldn't care if somebody was gay or not and nor would he interpret a gesture like this as something being forced on him. The people taking time out of their day to sound off about it three days after the event are making it a distraction for themselves.
As has been pointed out several times, the club made a gesture that wasn't intended to be a "display about homosexuality" as you've interpreted it. It was just a shout out to a type of fan, who might have followed the club through thick and thin but hasn't always felt safe or welcome at games, that they actually ARE welcome and that anybody who wants to give them shit about it does not speak for them. Why that's a problem for you, or anybody else, I don't know.
It's also ridiculous for you to speculate how Fernandinho felt about the whole thing. I'm pretty sure if it was that much of a problem that he could have discreetly asked that someone else wear the armband that day. The way it's been passed around this season it's not like anyone would have noticed if somebody else had it for the day. That said, any player that finds the idea of the club making sure that all fans from all walks of life are welcome can leave if they don't like it.