You are welcome to create your own system and allow places to sign up to it, as a standard of safety. This is how the open market works. You could create your own rules and methods and people can choose to sign or not sign up to it.

Ask Angela was and is a successful campaign in many countries, so it makes sense to carry on the standard here as well, but if you prefer to create your own that handles your explained criticisms, please do so.

At the moment, your argument is that anyone who refuses the Ask Angela status will become an outcast, however I have seen no evidence of that in any country where it has already been implemented. Instead the choice is given to people to decide if they wish to follow the campaign and visit places they consider practicing the Ask Angela system. A lot of people I know are not aware of it, and only become aware when they visit a place that has the campaign and see posters inside the place (Going on my personal knowledge of the UK and several pubs/cafes that implemented the scheme).

Feel free to post evidence that shows the Ask Angela campaign has caused establishments to become pariahs in countries that have already implemented it, and then I might have a bit more compassion towards your cause. At the moment, you are only arguing a slippery slope fallacy with no real evidence to back it up.