I understand you 100%, but it all comes down to what kind of stage you currently are at. For every stutterer there are days when everything is just fucked and you are fed up with life, stuttering is showings its ugly head much more than usually, at that point all thous positive things may seem toxic and i 100% agree. But then there are days when you feel more fluent, things are looking better, you just have that positive vibe and sometimes you cant even put your finger on it, why you have it, but it just feels like you could say whatever you want, and stutter would not even matter. Thats when thous people say thous positive things, because they truly feel and belive them, at least thats how i have noticed it from my experiance.