The easiest way to spot a fraud within a community isn't in looking for specific tells (well, that's the hard way), but to simply ask yourself 'are they trying to copy anyone?'.
Unfortunately I have a bit of a problem that Q's 'leading questions' format is similar to one of the many tools I utilise in posts (the 'leading questions' format is an effective way to get someone to accept a point without it coming across as hostile, because factual statements 'sound arrogant'), and I prefer to use my real name to self-identify elsewhere (a process 8chan prohibits, much to my annoyance).
However R's emulation of Q is clearly a massive signal of a fraud. People who are non-fraudulent express their own unique personality that is clearly and uniquely distinguishable from that of the 'lead character' (for lack of a better term).
Someone who emulates is symptomatic of one of two things (both indicating a fraud):
1) A fraud (because they can't make it, so they fake it), or
2) A follower (IE the person they like appeals to them so they emulate)
A follower by default implies they lack their own knowledge, are easily impressible, and therefore cannot offer their own insights (people with experience express their own unique personalities).
A fraud emulates a successful person in hopes of piggybacking off that success. Regardless of intentions, their goals are always harmful - it's nearly always selfish.
Ask yourself what unique traits does R bring to the table?, if the answer is none, you have yourself a copycat.