Yeah. Several years ago extremely clueless recruiters used to email people heaps. Lots of people were complaining about getting tonnes of spam from them. :(

Had to change my Location (or some similar obvious field) in my GitHub profile to "Recruiters FUCK OFF" before they took the hint. ;)

Thankfully, GitHub introduced some other way to signal if you are/aren't interested in getting a job (toggle switch?) not long after, which seemed to work.