There's really no gray area to the QAnon . It's an unsubstantiated conspiracy theory that's already led to violence/threats of violence against innocent people. Movements QAnon and Pizzagate are dangerous and are what lead to fascist military coups.
It's clear that Hunter Biden had a cushy job with a Ukrainian energy company because of his dad, so imo Twitter went overboard in completely blocking the Hunter Biden story since it had enough smoke to say there might be fire, but I can't really say I blame them when their decision to leave other right wing fever dreams go unchecked ended up making said fever dreams look more credible. For over a decade, conservatives have demonstrated a willingness to peddle bad faith conspiracy theories without a shred of concern for real world implications they have or the violence said conspiracy theories might lead to. After QAnon, pizzagate, terrorist fistbump, PLANdemic, Obama is a Kenyan Muslim, etc., it's hard for me to believe the Hunter Biden story is suddenly a good faith attempt to expose wrongdoing.