The missing piece of the puzzle is that in US law, there are some very specific groups of people who are carved out as having special protection (the general guiding philosophy is: it's not legal to discriminate against people for some innate qualities, including race or gender).

So the missing piece of the puzzle is: which of the protected groups would every member of QAnon fall under? There's no law against discriminating against people who believe the QAnon conspiracy and spread it.