Mine certainly isn't, it's like me. Worked out so far.
But then again, I wouldn't want to work for most companies.
Pecunia olet!
At least fixing stupid mistakes in your resume is well within your control, and (unlike cramming for their tests) doesn't take hours and hours of your time.
But my CV also shows part of my character, mainly the fun part. If that is deemed unprofessional by a company, I immediately know they are no good fit for me.
The thing is: As with every relationship, they are two way streets. I am not a beggar as a potential employee, neither am I king. We see eye to eye or not at all.
But to reject a candidate just because they're not the same kind of pedant that I am would be quite unreasonable IMHO. As long as the whole thing isn't littered with typos or formatting issues, that's just something I wouldn't pay too much attention to. Not everyone needs to be the person to dot every i and cross every t.
Also, I really want to see the HR department that can confidently reject or even mark down a candidate when most of the writing I've seen from most people in any company I've ever been (including from HR departments, PMs or executives) has been "meh" at best, and full of errors or at least awkward language more often than not. For better or worse, writing skills are not necessarily something we tend to select for in the industry.
Making such „mistakes“ actually shows quite a bit about the counterpart starting with correctness and precise communication.
Back then it drove me nuts when someone wrote „advanced in AngularJS 2“ - and it kept coming!
It really does require an eye for detail (in places where it matters) to a degree that comes epsilon close to being "pedantic" in the annoying sense -- without quite going over that line.
But whatever. It's your life. You do you, and I'll do me.