Yet I couldn't clearly claim that he does on the basis of this, as it's just confusing to me, no sure whether that's his flavor of irony. Do you have some more evidence to prove that he believes these things? I had previously seen him as weird and provocative, but not definitely right-wing.
It isn't problematic, just silly. There is no need to police other people's thoughts as long as they keep within the bounds of the law. He is even free to express those thoughts, within the bounds of the law, just like people are free to hollder 'death to America' during demonstrations in Oakland. One of the pillars of a well-functioning state is that things which are not forbidden by law are allowed. It might not be wise, it might not be smart, it might sound stupid (Qanon) or reprehensible (death to America) but it is allowed.
I'm confused, you started the argument off by claiming that spreading PizzaGate isn't problematic and then went into a series of arguments for why it should be legal? Can legal things not be problematic?
I'm confused by your confusion given the fact that I clearly stated that whatever someone says has to be within the bounds of the law. As far as I can see there is no room for confusion here, freedom of expression is bounded by certain laws which forbid a number of things. As long as you don't violate those laws you can say whatever you want.
Some people still think Trump is a Russian agent, on account of 3 years of conspiracy theories being promoted by the left wing media and their loyalists in the CIA and FBI. That's extremely problematic. QAnon and PizzaGate are fringe at best (and its not entirely clear how consequential they are), but probably half the country still does not realize that the Obama administration (and its loyalists) illegally spied on the Trump campaign, entrapped members of Trump admin (General Flynn), and did worse than Nixon could have ever dreamed of.
People like to magnify fringe conspiracies while completely ignoring mainstream ones, when the mainstream ones are actually dangerous for democracy. The police power of government was leveraged against a political rival for explicit political reasons and no one has been punished for it. Extremely dangerous precedent.