If you happen to be running the UK panty wetters forum from your own server, then you have a problem, but grandma Jessie's knitting circle is explicitly not in scope.
YOUR link goes on to say
>the more onerous requirements will fall upon the largest services with the highest reach and/or those services that are particularly high risk.
Even if your forum falls in scope, you're only required to do a risk assessment, if at that stage you are likely to have a lot of underage users, then there might be an issue.
However, if you're not an adult site, you only need to comply by providing the lowest level of self certified check. Handily, most of the big forum software providers have already implemented this and offer a free service integration.
Storm meet teacup.
I do love it when people lie and then try to get sassy when called out.
> Even if your forum falls in scope, you're only required to do a risk assessment, if at that stage you are likely to have a lot of underage users, then there might be an issue.
I also like it when people who accuse others of not reading prove themselves incapable of reading - as pointed out below, what I linked is required regardless of the assumed age of your userbase.