Elbow bumps, why?

On and off since March 2020 I have wondered about this. Why do they do it? I understand that the advice is not to shake hands in greetings. What I don’t understand and it’s often politicians that I see on TV doing this, is why the elbow bumps? For a start they have to get much closer together in order to do this.

Wouldn’t it be better to not have physical contact. After all we are meant to be keeping space between us. If they can’t bear to forego physical contact then for heaven’s sake wear gloves and have a handshake. No skin on skin contact and not such close proximity.

Insisting on this elbow bumping ( often looking awkward) is not clever. It doesn’t protect them from catching covid-19. I know that it is considered polite in the civil world to shake hands but couldn’t do that for the past year. Considering the social distancing, face coverings we have all become accustomed to is it not possible that these politicians and other business people/ celebrities could just not do anything.

If elbow bumps are permitted then why is hugging not?

Please could someone explain to me why I can’t hug my family but these people can bump elbows.

We are gradually coming out of lockdown here in UK. Will this habit continue or will handshakes resume?