were the gedolim who called out shabtai tzvi also reshoim if thats what he believed his chiyuv was to state so publicly.
Not even remotely comparable. You are further displaying your ignorance.
The problem with shabsai tzvi and his followers who violated mitzvahs and ate on tisha b'av for example is the same problem we have with yashka as is tackled by R' Schochet:
"7. Rabbi Keller identifies the Messianists' belief that the resurrected
Rebbe will be Moshiach with, lehavdil, Christianity. This obscene analogy
merely displays ignorance of both Judaism and, lehavdil, Christianity.
Unlike the Meshichists, Christians (as well as the Sabbateans) believe
that their savior was already the Messiah in actu, and that the Messianic
redemption is already an established fact, though yet to move to a new
stage with the "second coming." This is not a matter of semantics but
fraught with practical implications: that belief caused them to abrogate
Torah and mitzvot (even as the Sabbateans, too, changed Halachah because
of their belief).
There is not a single case of any Meshichists abrogating or changing a
single mitzvah or aspect of Halachah! In fact, they continuously urge
greater and more punctilious observance of Torah and mitzvot to hasten
the redemption.
More specifically: is it possible for a resurrected tzadik to be
Moshiach? According to Sanhedrin 98b most definitely yes! Is that view
"normative Judaism"? It is certainly not the normative Jewish perception
of Moshiach throughout the ages. By the same token, however, it does
not violate normative Judaism or valid Halachah one iota. The Almighty
can appoint anyone He chooses to be Moshiach, whether he be - to use the
Gemara's expression - "of the living or of the (presently) dead".
Indeed, the Meshichists are not even original. Aside of the Gemara and
the authorities that quote it (e.g., Abarbanel), no less an authority
than R. Menachem Nachum of Czernobyl (author of Me'or Einayim) stated
his conviction that the resurre cted Baal Shem Tov will be Moshiach
(see Sefer Baal Shem Tov, Me'irat Einayim, par. 23).
The Meshichists can and must be criticized for converting a (legitimate)
personal belief and conviction into a categorical imperative. There is
no objective proof that their perception of tzadik hador or nassi hador
supersedes different perceptions by others. Their public claims and
activities, therefore, are a harmful aberration and arrogant triumphalism."