Who are these strange referrers and how do I remove them?

Referrers show what sites lead traffic to your website, however spammers have recently taken advantage of this system to “trick” the Google Analytics 4 code and show their sites within your top referrers. Unfortunately, blocking these bots is a very time consuming process which does very little except clean up your reports, which only you will see. The best solution is to wait them out – they’ll eventually go away.