re the subjective/objective debate: as someone who kinda subscribes to the objective point of view, it is also good to consider where one's proclivity towards that point comes from. For me, part of it was a constant frustration when growing up at having opinions/tastes different from those around me i.e. a sense of alienation. Therefore I became fiercely protective of the 'objective rightness' of my tastes.
In my view, one of the good things about being in a close relationship (with anyone, not just a 'partner') is that it forces you to reconsider the notion that everything you think is good taste/bad taste must objectively be right, and to accept/at least tolerate/consider that another person feels differently about it from you. If you can't do that, I think that most often you end up browbeating the other person until they agree with you/accept not to give their own opinion. Not a good look. You can't baulk (?) every time other people don't exactly share your tastes in music, food etc, i.e. show that they aren't you, else you will end up unhappy. Sadly there is no objective proof that steak 'shouldn't' be well done, much as the idea appals me....
And I'd say the trick is to work out which things you are willing to consider might be 'just' your subjective opinion (which doesn't mean letting go of your opinion/passion at all, but rather not forcing other people to share your opinion), and which of your opinions are more important than that (e.g. deeply held moral views of the world). All of this doesn't mean giving up tryign to convince the other person of your rightness -of course not, that would be dull - but by learning to exercise more empathy in trying to understand why they think as they do. After all, it's equally dull to have definitively 'made your mind up' and never to learn from other people - that's a kind of death.
All that said, there is objectively no excuse for Wes Anderson making films.
PS The 'all Italians' thing made me chuckle. Essentialising about an entire country's attitudes is silly. Anytime anyone says 'all British people...', you know what follows is going to be ludicrous. My Dad does this a lot, with Italian/German/American people etc, even as he prides himself on having different attitudes from other British people.
PPS Surely a 'bourgeois' attitude is one which prides itself on thinking certain things are objectively right and others are objectively in bad taste/have no merit.