I never open VGC at work so technically speaking I don't have to worry about NSFW messages regardless of me receiving them or not
But jokes aside, kudos to the mods' team for dealing with those parasitic messages and those bots accounts. They really can be a scourge in forums. I used to go to this other forum long ago and while their website was decently made, the info relevant and all that, they had these bots invading the forums with clickbait messages linking to very suspicious websites, well you get the picture but that was not what was odd. The weird thing was how the mods on that website did barely bother to clean up the site so many times I reported spam messages (not even in private but in the forum itself) and a week later that spam message was still there. It was really a mess and I'm simply not going to that forum anymore cause I suspect foul play as in the website is somehow part of the spam, they get paid to turn a blind eye or whatever the case may be.
Anyway I have hitherto never received suspicious messages of any kind over here and if I ever do I'll let the mods know.