Is this bandwidth limit for you entire loyce.club archive?
No, addresses.loyce.club has it's own VPS (with much cheaper and more abundant bandwidth).
I don't know if I have anything to do with your increased traffic, but since last week I've been checking some topics for my new ninjastic.space
feature, and for every new topic I check, I also request the post from your archive. But at the worst scenario I was only making 1~2 requests per second when running.
That should at most consume a few GB, not TBs.