Of all design systems I'd be curious about, the AWS console may be the last one I'd choose to mimic/leverage.
Still leagues better than Azure, which causes brain damage.
Having been in the AWS console on a nearly daily basis for the past 3 years, I've definitely seen some of their screens that are terrible, some services that are hard to use and I've also seen screens get worse/harder to use with design updates even if they're more consistent. Often this is followed by consistent and better functionality, but that varies per service. I definitely understand where you're coming from as it feels like support for any given service in AWS is a game of chance, but the designs are absolutely converging over time.