He is a huge mysoginist and transphobe. There was an FFF long time ago, where he defended the infamous Uncle Bob, and when people pointed out in the reddit thread that he is a problematic figure, kovarex came out defending him and insulting so many people in the subreddit that he got his messages removed by moderation. Was a huge clustefuck.
It is the best one for houses vulnerable to quake damage. id rather avoid gatling nail guns though.