I'm left-winged with absolutely no love for Parler and believe a lot of people have blood on their hands for the violence incited last week.
The security researchers were wrong to make this information publicly available but the fact that Parler actually put their users at risk like this with such a disturbingly glaring security flaw is absolutely infuriating and outrageous. I'm speaking as a believer in civil rights and user protection. Call it growth hacking or try to overlook this as a sympathetic mistake if you wish but this was a disgustingly reckless decision for any competent technical team to make and it deserves profound censure.