מתנבא על משיח means saying prophesy about moshiach , does not say anything about claiming a candidate, I’m saying the same way we say a candidate, you say no. Neither are prophesy.
From the context it would seem it’s talking about prophesy about WHEN moshiach is coming, and when he doesn’t come that time, it’s a חרפה.
Anyway a few points I saw and will comment on even though I should just say “look who’s talking about shluchim am haratzim” at least those shluchim learned semicha and rambam – kol hatorah kulah. Vda”l
About Jews being equal and non the less mevushal wine. In Tanya this idea is explained that we see indifferent areas in halacha have different dinim i.e. shchitas mumar of mechalel shabbos you can’t eat משאכ גילוי אריות, by יהרג ואל יעבור it’s the opposite. Perek לב תניא clearly says that a rasha could have a higher neshama, perek 2 too. Perek 31 also talks about how a beinuni – someone who never does any avaira even bitul Torah should feel lower than a rasha. But as explained in perek 2 and 32 there is a level in neshama that we are all equal.
Anyway today we start a new cycle of rambam . Did you learn kol hatorah kulah yet? Go learn and you won’t have such dumb questions.
Why lubavitch shchita simple, the rambam says the way to come to fear hashem is thru thinking about his greatness then goes on to explain 4 perakim about מעשה בראשית ומעשה מרכבה. How are people who are against learning מעשה מרכבה going to get yiras hashem? So we eat from someone who learns these ideas. Now I don’t consider everything else traif or say everyone else is definitely not a yiras shamayim (some can have natural yiras shamayim) , but I need to be careful for myself to get from a shochet a yiras shamayim כ”ש from when