Funnily enough the only lies or mis-information I've ever heard from exjws have been about each other!!!
*They will often frame incidents in a negative light, exaggerate short-comings or downright misquote each other, attributing nefarious motives when there were none intended .
Rarely, if ever, have I experienced exjws making false claims about Watchtower.
* to be fair it's mostly exjws with a heavy presence on social media - mainly YouTube. Exjws you meet generally or on forums, etc, often go to great lengths to be fair and balanced when presenting information about others, be it people or organizations. Coming from our background, where whole groups of people were routinely demonized, being fair and honest in our appraisals of others is something that's usually very important to exjws.