Is it disingenuous to speak authoritatively on a subject that one doesn't bother to google? Is it also disingenuous to vouch for someone making an inflammatory

Is it disingenuous to speak authoritatively on a subject that one doesn't bother to google? Is it also disingenuous to vouch for someone making an inflammatory comment intended on derailing discussion, especially when that discussion is threaded from someone reliving their experience with explosive projectiles?