WTF exactly do you think socialism is, if you think it’s off topic?
You mentioned tankies. Tankie is a pejorative for Marxism-Leninism, a form of socialism.
You mentioned communism. Communism is a form of socialism.
You mentioned social democracy - a concept many ignorant people confuse with socialism.
You also intimated that MLs simply “haven’t discovered social democracy” - a statement that can only be said by someone who thinks social democracy is “socialism done right”.