> Do you realize that this whole discussion exists precisely because it's unclear?

I realize that this statement is untrue.

Some people are dredging up all kinds of "but what if" and "I really, truly don't understand how my collecting data could be considered GDPR-triggering".

I find that dishonest. Protest as much as you want.

Oh, and surprisingly, just by some bizarre happenstance, you are "Currently working on Instinctive, a B2B marketing technology company."

I can tell you immediately that whatever you're doing falls under the GDPR.