It looks like they allow user generated posts on a calendar, and every site that allows user generated content regularly gets used for phishing, spam, etc.

I read an interesting article on the Big Lie over the weekend and it mentioned an example from 2016 where private non-profit conservative groups were involved in promoting Green and Independent candidates with the intention of diluting vote for Dem candidates.

Probably not related, but worth mentioning the coincidence just because it was such a good article https://www.newyorker.com/magazine/2021/08/09/the-big-money-...