Maybe just because it's fun to pick on the new kid...
The difference is Facebook & Twitter take their content moderation (and it's overall impact on their business) very seriously.
From any angle you look at this, Parler failed at reasonably moderating their content. More so, at their own peril despite being warned by AWS about the violent content.
And by employing volunteer moderators, it reinforced the echo chamber effect, suppressing any views or opinions diverging from the mostly far-right user base.
The fun thing is...why oh why depend on other castles like aws? Servers are cheap, independent Data-centers are here, and good system administrators (like myself..of course) are still a living species (although on the brink of extinction outside habitats like finance and insurance etc)
OTOH, their volumes did not justify the complex environment they allegedly had and they should be very well within the skill set of the very average devops engineer. No large scale deployment expertise required.
The difference is Facebook & Twitter take their content moderation (and it's overall impact on their business) very seriously.
From any angle you look at this, Parler failed at reasonably moderating their content. More so, at their own peril despite being warned by AWS about the violent content.