I don't think this adds to Parler's credibility. I'd say it's consistent with their self-portrayal as the innocent victim of a liberal conspiracy.
Parler's moderators were fine with content like https://i.redd.it/om90nwadqca61.png - it's not surprising that Apple, AWS, and Google found it unacceptable.
Making these emails public (even in a censored form) could expose AWS employees to doxxing, harassment, and worse. An email system administrator, for example, could use the text of an emails to identify which AWS employees corresponded with Parler.
To make such a claim, I assume you have a quote or Like (whatever the Parler equivalent was) from a moderator supporting it. Care to share it?
My claim is that Parler's moderators and/or management is fine with such content existing on Parler - Amazon, Apple, and Google are not. Twitter has its own issues but comments like that aren't going to last 2 days.
It's fair to say that tech is majority liberal and it'd be simply dumb to contradict liberal orthodoxy to say unconscious bias doesn't exist.
So it's certainly fair to say that tech has an unconscious liberal bias and their actions are going to be harmful towards conservatives.
I think it's a combination of avoiding liability and Parler's failing to comply with moderation policies.
Among the big mistruths from AWS alleged by Parler, Parler does do moderation. They have a company principle of not surveilling every single thing their users do and vacuuming up data on them (which I would think most on HN would praise).
They have a group of about 600 moderators that review and take down reported posts. Over the last couple months given the in flux of new users and violent content, they did develop some machine learning tools that would identify potential violent posts and send them to a moderator for pre-approval. AWS told them that wasn't good enough. So Parler said, "how about we just use AWS Rekognition, your own product?" To which AWS said, "no, not good enough." I wonder, what is "good enough" to AWS? They clearly don't apply the same standard to Twitter.
He also talked about how just a week prior the AWS rep was doing the standard AWS rep thing of, "we love you, what can we do to get you deeper into AWS ecosystem?" Per Parler's CEO, Amazon had previously been satisfied but suddenly after the capitol riot, nothing would satisfy them.
It's remarkable to me how much disinformation there is out there over this. Although after the CentOS disinformation fiasco, I shouldn't be all that surprised.
I hope they release all of the correspondence soon so we can know who is telling the truth. It is a matter of great consequence in my opinion.