All of the gods that don't have a stake in the tournament seemed extremely calm about the revelation to what Gokus transformation meant, it makes me wonder if these particular gods have all reached a similar state already and as such are not as impressed. They did say its something difficult for even the gods to achieve but not something that is impossible, giving the impression that it has been done before.
Also, Beerus was legitimately worried about Goku, I have watched that transformation/fight several times because it was a pretty awesome moment and that's something that stood out.
Also, Jiren has still not been pushed to his absolute limit even with Goku in that form, sure Goku landed some great blows, but Jiren was standing his own against him still, that guy is a monster. How Hit can even hope to stand a chance against him I don't know. Perhaps its more of a bid to buy time than actually having the intention to beat him.