I don't think you've been singled out. The algo just make a call that day. Heaps of other people have been getting banned from random trivial stuff unrelated to bitcoin. You could of posted those words on any other day and it may have slipped the net. 

That being said, it still sucks and I feel for you. You've assisted me on many occasions and helped me on my journey over the last few years. I'm always grateful. If you don't get it reversed then I really hope nostr blows up and you get to reach many more people. 

if you're ever shipping to the UK then lmk. Only too happy to help to financially assist Ministry of Nodes and at the same time add another nodebox to the grid here in England. 

All the best!