It really annoys me that many tech recruiters do not have a basic knowledge of the roles they are trying to recruit for and what skill set to look for when they cold message/call potential candidates on LinkedIn.

I make it very clear on my profile that I am a Full Stack Engineer. Still, every other day I get messages about Data Engineering, Frontend Dev or SRE roles. Sometimes a recruiter would insist that I schedule a call with them before they tell me the details, and then I would realize after the call what an absolute waste of time it was.

I have a lot of respect for recruiters. It's not an easy job. But I'm starting to strongly believe that tech recruiters should be made to go through a specialized training to make life easy for themselves and to stop wasting time of people who are not even remotely suitable for their requirements.