To me it's different when a founder/hiring manager contacts me about a job, rather than a recruiter. On LinkedIn ~90% of job messages are from recruiters, once

To me it's different when a founder/hiring manager contacts me about a job, rather than a recruiter. On LinkedIn ~90% of job messages are from recruiters, once you filter them out, not many are left, and I typically respond, even if with just "Thanks for reaching out, I'm not available currently".