Hiding my son's sexuality from my husband

My 17 year old last week told me he was gay. That he had felt this way since was 10. He begged me not to tell his dad. I know you aren't supposed to keep secrets in a marriage but this one has me torn because I'm scared he would hurt him or kill him. Maybe not kill but would hurt him because of his outrageous beliefs. My husband wasn't always like this. We've known each other since we were 14 and old him would take our son to his first gay bar. The last 4 years he's gone down this conspiracy theory alt right Andrew Tate pipeline. He's started listening to people like Andrew Tate and Aiden Ross. Even started believing some of the disgusting antisemitic shit Kanye West has said. I've watched who I fell in love with and have been with for 24 years morph into someone I do not recognize. He doesn't even respect my no during sex anymore. He makes me feel like shit and tells me it's my duty to please him. He's gotten so misogynistic, homophobic, anti semitic. He's believing wild Qanon conspiracy theories and also think Jews are destroying the world and are the ones sex trafficking children. I don't know what happened to him but for the last 4 years he's started going down this pipe. I know people will say leave but I stay for the sliver of a chance I'll get my old husband back. I don't want to break up my kids home if I can get him back to who he used to be. In the mean time I do want to protect my children and if I know his dad will physically harm him if he finds out am I terrible for not telling him?

@L we have 4 kids together. I don't want to take their dad away. He was a good person before. Idk what happened and it's hard to erase 24 years of memories with a husband that did support gay people. That was a very selfless lover. That cared about people. He was never this idek what to call him.

@Soul Glow it's not that I accept his views because a lot of them are disturbing and some like his thoughts about women and consent make me scared of him. I just hope he comes back around