The Bottlerocket issues really surprise me - not an experience I've shared even with heavy use. I use EKS with Bottlerocket + managed addons + Karpenter, and our security team is super happy that _nobody_ has access to the underlying nodes. Immutable OS is a key selling point, and Brupop "just works" to keep everything up to date without any input. Patching nodes is something I haven't had to think about in almost a year.