That just a stupid take, though, and has been explained several times throughout the thread.
A service provider (generally) cannot lawfully discriminate against a potential customer on the basis of protected characteristics, as it should be. You can discriminate against someone for, for example, simply thinking they're a complete bell-end.
It's the difference between racism, sexism, ageism, etc vs "Tommy Robinsonism".
And yes, there are some limited instances where a political belief is protected but it's daft in the extreme to think that, for example, being racist/ageist/homophobic should be protected by equality legislation (it'd defeat the whole point).