@CBUK2K2
Some people would object to pride, it seems a bit hypocritical for one group celebrating their sexual preference to try and ban others doing the same.
Equivocation fallacy.
The fallacy of equivocation occurs when a key term or phrase in an argument is used in an ambiguous way, with one meaning in one portion of the argument and then another meaning in another portion of the argument.
Here, you are using sexual preference to refer to both
i) sexual orientation, which is the sex class(es) of people one is sexually attracted to, i.e. homosexuality, heterosexuality and bisexuality, and;
ii) sexual preference as in what you like to do with a sexual partner in order to achieve orgasm.
These are actually very different things, which is why precise language helps.
Knowing/inferring someone else's sexual orientation is the natural result of people of all orientations being allowed to live their lives on equal terms. For example, even the most dense among us realise that Mrs Betty Dean-Smith and Mrs Anne Dean-Smith are either lesbian or bisexual, whether they go to Pride with banners says "Lesbians of Milton Keynes" or not. It is appropriate to know that other adults are in long-term relationships with each other and share property.
That is a very different thing from finding out what the Dean-Smiths do in bed, not that Betty and Anne would ever tell you. (In your dreams, mate!)
Please do not conflate these again, it's horrifyingly homophobic.