Sure...
But if you have some areas where fewer people are taking seriously, getting impacted less than areas where 90% of people are taking it seriously... that shows that "level of seriousness" is just one factor among many.
Which is why I reject the notion that "this could've been largely avoided if Trump just set a good example with mask wearing and social distancing" as some are trying to spin it.
Those West Hollywood parties, and those DJ-hosted House Parties that got busted in Chicago and NYC would've happened no matter who the president was, and no matter what any politician said.
The reality is, people in their teens and 20's don't hang on every word a politician or pundit says. They were cooped up for weeks, going stir crazy, and wanted to go party. Trump/Obama/Hillary/Mitt Romney/Bernie/Anderson Cooper/Tucker Carlson/Ben Shapiro (name a politician/pundit) could've said "You can't do that, you have to keep distance" till they were blue in the face, it wouldn't have mattered.
As a point of reference, the one Hollywood DJ who got busted for throwing a massive party clearly doesn't seem to like Trump too much, based on this photo he posted:
View attachment 287132
"I met my idol Donald Trump" (while posing next to a trash bin)
That's certainly a factor...however, to stave off that vector of transmission, both parties would've needed to have been in concerted agreement about travel restrictions back in mid-January, and that wasn't happening.
One side wanted to restrict travel (but limit to a select few countries that wouldn't have been enough)
The other side wasn't on-board with restricting it at all.
Nor would I...
I'm simply saying that trying to blame it on "lack of president setting a good mask wearing example" as major contributor is ignoring a heck of a lot of other aspects that are far more impactful.
I don't lay the blame at the feet of any politician for this one (apart from the ones that actively withheld data from the WHO instead of being transparent so that other countries could start trying to get prepared)