> their core internet service seems really solid

If you ignore data caps the core service itself does seem to be much better these days than it was 10 let alone 25 years ago. But then again my sample set consists exclusively of locations where they have one or two FttH offerings as competition so it's not as though they could have remained in such markets without upgrading.

Somewhat tangentially I find it surprising how fast MoCA is when you consider the cables it runs on top of.