That's the point of the post you are replying to: don't be in business of hiring mechanics if you have no clue that there are "tire" and "engine" ones.
i too find the "fullstack developer - printer problems" memes pretty funny but i can also sort of understand the other side and to return to the analogy, a tire-guy car-mechanic probably has a better chance to diagnose and fix your car than any bicycle-mechanic.
It would be a good analogy if the recruiter spam also did not contain experience requirements: they are not just looking for somebody to fix their car, they want somebody with 10 years experience if Pirelli and 5 in Bridgestone and there will be a quiz where you will need to identify tires (there are just about 1500 of those) by patterns, Leet Road.
