Agreed. More and more if I'm thinking of a new thriller or military fiction book to read, I check he authors bio for relevant life skills, if they are a lifelong writer from LA or NYC or something I tend to want to read a sample first or just pass.
Plenty of former mil and LEO authors out there that could use my $$ instead and will write about guns/gear and tactics in a more reasonable manner. Peter Nealen and Jack Carr come immediately to mind (Also Larry Correia, as mentioned, is great).
Another aside, along with Reacher (I couldn't get through the first book) I neve understood the appeal of the Patterson books, had to read a few on long flights when they were the only remotely interesting thing in he airport and Kindle didn't exist yet. Just about everything in those books annoyed me, plot, pacing, realism, dialogue.