Someone who talks only about one subject is just sperging out on it. Some people only talk about Bitcoin. Some people only talk about gardening. Some people only talk about golf. Some people only talk about food.
Bitcoin is one of the most interesting pet topics because you can use it to measure wider economic effects, track political changes, or philosophize about relative value. So, it's a topic that smoothly flows into other topics.
I therefore allege, today, here and now, that:
#BitcoinTourettes is the least-annoying tourettes.