That would be "welcome to the world of academia". My post-doc friends won't even read a blog post prior to checking author's resume. They are very dismissive every time they notice anything they consider sloppy etc.
You seem to merge two different points. Not reading based on sloppiness is defensible. Not reading based on the author's resume less so.
When "sloppiness" is defined as "did anything on my personal list of pet peeves" (and it often is) then the defensibility of the two begin to converge.
Which is a problem with the reputation-based academic system itself ("publish or perish") and not individuals working in it.