To start with the gravimotion "theory" is not made of complex mathematics that can only be understood by a few. Gravimotion is presented instead under the form of simple geometrical models that everybody can understand.
This is a major dissenting aspect because physics authority is based on the incomprehension that we laypersons have of physics mathematics.
Gravimotion being simple and understandable sides-step the magic that makes physics revered.
In addition gravimotion dissents in that it departs greatly from physics interpretation of Nature and theories.
In gravimotion, motion is absolute and not relative; motion occurs by itself just as the translation of light does in physics.
Then, unlike physics which is based on a number of various material particles and four particle forces not mentioning space-time, Gravimotion is based on a "single" and "simple" phenomenon that of motion.
In the gravimotion theory everything is "made" of motion, from space-time to matter through electric charges and electromagnetic fields.
Compounding the differences that phenomenon of motion does not even exist in physics! As just mentioned only particles and forces do exist in physics!
Last but not least Gravimotion is exclusively based on common sense!
And that is improper, even out rightly wrong for some, especially in physics; how could one use common sense to do physics that according to all does not make sense!
Gravimotion is a clever, innovative interpretation of Nature.