Is the slogan "No entry for colleagues, no indecent comments" illegal?

Is this the slogan of a certain business location? This reflects the operator's operational autonomy. However, many businesses know that they have operational autonomy but do not use it. For example, this slogan may reflect operational autonomy, but there are problems with the way it is written. In many cases, this slogan gives It feels very uncivilized. If you write "Our company does not accept colleagues", OK, there is no problem at all, because this is the right of the merchant, but the rights of the merchant cannot affect the implementation of other people's rights, such as free entry. Whether you enter or not is up to others. It's your own thing, but if you don't let others in, that's your right. The same thing may lead to different results