Bollocks.Public liability payouts are likely to skyrocket if people are getting ill, or even dying from picking up contagious diseases in public places. Therefore passports make sense from an economic sense
This wasn't true before Covid and it won't be true after. Lawsuits and prosecutions about spreading disease are rare and hard to prove.
Any twat trying to sue me for giving them Covid will be promptly asked to prove they didn't get it from somewhere else and duly sent packing once they've failed to do so. It will not be sufficient to blame me because you can find a rule that wasn't followed.