I'm not even sure the Qanons would bring that thing up. That someone fudged an email so that he could present that to a judge and get a warrant to investigate something doesn't actually fit with the deep state / Qanon conspiracy theory. The very idea that the deep state needs warrants to do something undermines the basis of the theory.
So this particular judge isn't in the deep state so they needed to doctor the email. but, in that case, are any judges in the deep state, and if so, why didn't they get a deep state judge to just sign the warrant? Surely if you had to present the doctored email to get the warrant, you could have gone to a nudge-nudge wink-wink deep state judge and have gotten him to give you a warrant with no email, just stating "we have evidence to believe XYZ but it's classified" and the judge go "well that's ok then, warrant granted'.
The more "deep state" evidence gets tied up with petty paperwork issues, the less convincing the overall "ruthless satanic overlords" narrative becomes. Like one of the ruthless satanic overlords gets finished munch on children's faces then goes to make a move against Trump, but is told to do so he needs to go across town to the courthouse and get a J73-A form, and get that signed by the district attorney, and he sighs, and says "well I'll munch a couple of children's faces first, then go across town and get the correct form on my lunch break".