One of parler’s problems was they didn’t scrub headers which made it very obvious they were using AWS and which AWS services they were using.
AWS is just a bunch of APIs - they could have colo’d their front end or put a bunch of varnish servers in front if it at a colo and nobody would have been the wiser they were using AWS on the backend (assuming their AWS account didn’t have Parler Inc in the payment details). From there getting taken down from one colo would just be an issue of spinning up a front end at another colo. Front that setup with a couple CDNs and now you have layers where you have to coordinate between half a dozen companies to bring the site down completely, meanwhile your data is safe in AWS because nobody knows your using AWS or even if they do it’s hard to pick you out from the millions of other AWS users.