Almost as patronising as assuming you know why someone else is booing. You've no idea if people are booing at the board or the players or even the refereee, unless you've asked them all. It's not a holier than thou attitude to challenge someone who thinks it's ok to boo. It's just a different opinion. I happen to think people who boo are muppets. If someone can prove to me that booing, for whatever reason, will help our cause, then I'll change my mind. Until then, my opinion stands. As does yours, I guess.
Yes, of course they have the right to boo. I just cringe with embarrassment when I hear it and see the expressions on the lads' faces on the pitch, when they're trying their best. It devastates them, makes them fearful, makes them hide away, stop taking risks, play easy balls instead of trying to find a killer pass, pass instead of shoot, for fear of missing. It makes them want to be substituted, it makes them almost happy not to be in the team, and ultimately it makes them move on to other clubs. I'm sure several on here know player(s) personally. If so, message them now and ask them how booing affects them.
I wouldn't call someone patronizing for explaining an opinion. Nor would I expect to be called patronizing for expressing mine. I don't know why every single person 'boos' at a ground - I merely stated that I could understand it and tried to explain that in terms of the board/owners. I think that's understandable even if you may not. The aspect I find patronizing or perhaps rude is to have these people called 'muppets'. They are not at all unless of course they become racist, xenophobic etc...So, in essence, challenge peoples' booing if you wish but don't belittle them by insults. If I called you a Muppet you wouldn't like it. ( and I'm sure you're not at all of course) Regards.