My interpretation is that visitors don’t have specific rights to criticize a government per-se. However! In most non-authoritarian countries, everyone has the unequivocal rights to criticize a government as long as they are not intending on disobeying other harassment/discrimination laws, regardless of their status. Since visitors are also included in “everyone”, they can criticize a government too

Of course this only applies to non-authoritarian countries. Authoritarian countries don’t have that right even for their citizens, so visitors are not excluded either

(I hate where this train of thought is going but whatever…)