1) You don't know if they did or did not do this kind of testing. I don't see any proof either way here. You're assuming they didn't. 2) You're assuming whatev

1) You don't know if they did or did not do this kind of testing. I don't see any proof either way here. You're assuming they didn't. 2) You're assuming whatever issue happened would have been caught by testing on generic EC2 instances in AWS. In the end these streams were going to users on tons of different platforms in lots of different network environments, most of which look nothing like an EC2 instance. Maybe there was something weird with their networking stack on TCL Roku TVs that ended up making network connections reset rapidly chewing up a lot of network resources which led to other issues. What's the EC2 instance type API name for a 55" TCL Roku TV from six years ago on a congested 2.4GHz Wireless N link? I don't know what happened in their errors. I do know I don't have enough information to say what tests they did or did not run.