I have no problem with you not liking the song or with you thinking praise given to Jon Brooks by others is overblown. But a real critic also needs perspective beyond his/her own ego. Taste is obviously subjective. That shows up in color, in food, in art, in fashion, in film etc. Clearly that shows up in music also. Some people love the sound of ukes, banjos, accordions or whatever. Other people cringe at their sound. Some love Rap, others hate it.
A good critic can be honest about their own reaction to something while also maintaining perspective about talent whether or not something is much to their own liking. You weren't being much of a critic, you voiced a strong opinion and there is a difference between the two. Your opinion is just as valid as mine.
Jon Brooks is a major talent and highly regarded songwriter whether or not you or I happen to like him If you are not familiar with the Kerrville Folk Festival "New Folk" contest look into it. Past winners have included Lyle Lovett, Nanci Griffith, Steve Earle, and David Wilcox among others.
As to my opinion BTW, "Blowing in the Wind" is a near perfect song, a masterpiece for many reasons. I don't equate "Because We're Free" with it in that regard by any stretch. "Blowing in the Wind" is both deep and quickly accessible, with riveting serious content wrapped into verses that compel audiences to sing along. "Because We're Free" is powerful for me in the emotional impact it has on me. Yours obviously differs. I get that its potential appeal is much more narrow than Dylan's masterpiece.