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.