Earlier quoted context omitted.
This is simply untrue. EG "I am—well, I was—great at opsec. I got doxxed on farms because someone spent 50+ hours trying to nail me down until he ultimately “compare[d] her tweets to weather history to determine her city, and complied a parametric list of all the profs in nyc and went from there."
I don't see what an out-of-context quote disproves about my hypothesis.
The OP mentions that they tried to follow good opsec but had an issue, and you mentioned "Showing basic restraint and not oversharing online" as the solution -- which based on OP's opsec comment they looked to follow that.