But it probably isn't. It's a cutesy term adjacent to pet-speak and baby-speak. Do an image search for "frens" and most of what you'll find is cute animals, 10-to-1 vs frog cartoons.
https://www.reddit.com/r/aww/comments/uyhno1/frens_chilling_...
https://www.google.com/search?q=frens&tbm=isch
Very wholesome.
The alt-right has a meme of 'appropriating' popular terms and symbols in an attempt to make people overestimate P(alt-right|symbol), to make their critics seem unhinged as they level accusations against innocent people, and to make themselves seem more popular than they actually are. They've done this with 'frens', the 'okay gesture', and even drinking milk. You have unfortunately fallen for this, and become their tool.
The same search on Google gives me pretty much nothing but Pepes - only 7 images in the first 30 results are not Pepes. Google is pretty convinced "fren" is an alt-right signifier.
1: I am proposing "duckwent" as the past tense for "duckduckgo".
P(alt-right|fren) = P(fren|alt-right) P(alt-right) / P(fren)
You have tunnel vision for P(fren|alt-right) and are confusing it with P(alt-right|fren).