That kind of deck is probably why we need Jinzo. Though aside from also playing a burn or mill deck, there is one deck that can counter that Ojama Go! Burn-- the Anti-Trap/Amazon deck, featuring E-Hero Wildheart and Tenkabito Shien. Whether it works well against everyone else is a different question though, and the fact that almost no decks can win against that burn deck is still undisputed.
I think Silent Swordsman OTK could also work, as long as the burn user doesn't draw Temple of the Mind's Eye or (multiple) Kuriboh. A huge crapshoot, to be sure. If there are any other decks that are not burn or mill but could possibly counter that Ojama Go! Burn deck... Please mention them.
Crying about an old 🔥 deck dude i hit kog with this deck in jan and feb with a way better build !iAn!s deck sucks honestly because it can be milled out