couple important bullet points here:

the people who infected everyone else had gotten negative covid tests before traveling to the wedding

everyone was in a tent. it doesnt say how enclosed the tent was but it would definitely cut down on air flow

doesnt say whether or not people were wearing masks but i suspect not

if these people hadnt been vaccinated, it would have been a lot worse

the big delta wave will hit the US pretty soon, and is already starting in states with low vaccination rates. new mutations (delta plus, epsilon and lambda) are on the way; lambda is more infectious (symptoms and severity are unclear). the CDC is wrong, everyone should still be wearing masks indoors and in crowds (which is what the WHO says anyway). children still arent vaccinated. 

you do not want to get covid at all, even mild covid. long covid even with mild symptoms is really fucking people up (talk to anyone with a chronic illness about what this is like and hopefully they can scare you straight). even mild symptoms like “brain fog” can effectively ruin your life. one guy got tinnitus from long covid that was so bad he committed suicide.