Naw Marco it ain't nothing new, a guy wanting to keep his "honey hole" a secrete.
Goodness, I remember wayyyyyyyyyyyyy back in the fifties being told to keep quiet about where we caught the fish. Which I didn't and was always ready to run at the gums. Sure glad I got over that in my older years.
Use to have a ball with my brother-in-law fishing French Creek around Franklin, back in the day. He would sneak off, to his hot spots, catch 'smallies' then shove "Polaroid" pictures in my face or invite me to a fish fry which was usually on a day I couldn't make it. Didn't take me long to find him and I would hide and throw rocks in the creek, take pictures of fish I caught in in his spots that revealed landmarks or, just get there ahead of him. The end results were always the same, he wouldn't talk to me.
You just keep doing what your doing because it gives you pleasure, in helping others to be successful. It is goodwill such as yours that separates a fisherman from a sportsman.
As for the naysayers, just like my brother-in-law, they'll just have to get over it!