Extremely doubtful. The fact you haven't yet hit limits does not mean no limits.
Nor does the fact the provider claims unlimited.
I take a lot of notes but I don't think I'm going to end up with the largest issue collection on GitHub.
I could always spin up a second repo or org if I do run out. I have my notes scattered across several hundred repos (and a hunch of orgs) already.
Yet still, one more could hit the limit.
Extremely doubtful. The fact you haven't yet hit limits does not mean no limits.
Nor does the fact the provider claims unlimited.