A hallmark of today is that irony, sarcasm and parody are not understood or comprehended, and the worst literal interpretation is always taken.
But then we have the public threads like this one that anyone can see, so there is still grist for categorizing this as a hate or worse group.
And YES, ,ndo, the NSA and other agencies routinely store everything. It's not even a speculation. The NSA has a back door into all mail servers. I have this site blocked on archive.org and the major search engines but that doesn't keep anyone from storing the content.
One thing I see you doing consistently is saying "it's probably not that bad". In the US it is. I'm not attacking you, just suggesting that you recalibrate to an appropriate defensive level of paranoia.
I'm debating but I will probably go dark on this site with a blank title and nothing public.