Gun Control & RKBA

In case you never heard of the exact definition
A factoid is either a false or spurious statement presented as a fact[1[2] or a true, but brief or trivial, item of news or information.

The term was coined in 1973 by American writer Norman Mailer to mean a piece of information that becomes accepted as a fact even though it is not actually true, or an invented fact believed to be true because it appears in print.[3] Since its creation in 1973, the term has evolved, now often being used to describe a brief or trivial item of news or information.]

No it isn't. It is commonly accepted, but that does not mean it is true. Claiming something is true because it is "conventional wisdom" is a logical fallacy.
https://en.wikipedia.org/wiki/Conventional_wisdom

For someone who claims to be an expert debater, you have a lot of logical fallacies misdirection.