Seems he wasn't at all contrite and the now-deleted "apology" was meaningless.
Kyle Gass of Tenacious D has deleted his Instagram apology following intense backlash over a controversial comment about former U.S. President Donald Trump during the band's Sydney concert. The fallout from Gass's joke led to a domino effect that saw Gass dropped by his agent, and the remainder of Tenacious D's tour was canceled.
Jack laughed at the joke at the time. He only canceled the tour to try to save face and distract from that it was the venues that were canceling on him so he was not going to have anywhere to play for much of the rest of the tour. The venues were getting tons of refund requests and some were worried that riots might break out in their buildings if they said that "joke" in front of the wrong crowd.
Ehhh, fuck him then. I thought maybe he was one of the not so bad guys. Figures...