you think holding hands, placing a hand on your partners leg, or around their shoulder, walking down the street linking arms are show offy?For the vast majority of people in the UK no more work needs to be done. For most there is no issue at all.
For the very small amount of people who are outwardly hostile there will be little or nothing that can be done. Just like people who drop litter, people who don't work, people who get asbos (if that is a thing anymore), etc etc. Virtually impossible to get intolerance down to zero.
To be fair I'm not that keen on anyone who isn't living with their parents showing affection in public. Always seems a bit show offy.
I'm not talking about wearing the face off each other here, just general small signs of affection.