One of my top lessons I've learned doing successful startups: 1. Recruiting is the #1 job of any startup CEO, and the #1 determiner of corporate success. 2. Up market, down market, side market, it doesn't matter: You will get better employees if you treat candidates with respect and you will be more competitive. 3. It's a lot of work for the 95% of clowns out there you interview, and there's a push towards automated…
My experience is the same as yours OP. Hiring just isn't treated with any respect and your career will probably suffer if you take it on.
Now that i've finished complaining... I think there's a good reason for this behavior. In the US, where most of our posters are from, you can fire people for any or no reason. It's true that you can put in more effort at the beginning of the hiring process to find better candidates but you won't really know if they are a good fit until they work there for a while. You can have great candidates on paper who don't work out in person, and terrible candidates on paper who are great on the job. This randomness to the hiring process means that people don't treat it as a real discipline. And if you do hire a dud, you just fire them. Is it really any wonder that most recruiting processes are so callous?