No don't worry about it. He's in the business to make money, I'm not here to knock him or prevent sales. I could block him but I try not to as I sell somethings on Facebook and want to make sure I know where my listing is and if it needs a bump to the top. If I block others, it looks like mines on the top but in reality it's at the bottom.
Heck, people probably think the same about me. Lol!