I say well done - these are grown, adult men who knew full well what they were doing; and their online trolling has come back to bite them on the bum. Maybe it will shame them into changing their behaviour in future.
I found several of them on FB (their names + "Bristol" seem to be prominent in the search!). They seem to have women and girls in their lives, plus several are fathers too. The article especially comments on one man who had set his profile picture with a "Be Kind" frame!
www.bristolpost.co.uk/news/bristol-news/abuse-threats-made-greta-thunberg-3897936