The WITH_XC_NETWORKING build option is off by default so the developers have obviously intended this to be a valid build configuration.
If Debian shipped a Linux kernel point release that disabled networking I think people would be similarly upset, even though it's also just a build option and intended to be a valid build configuration (and would even more secure!)
That is not comparable. "If Debian shipped a Linux kernel point release that removed a risky networking plugin and some disabled-by-default plugins and made a -full version" that would be comparable.
BS. This change was in Debian sid/testing. That's what it's for. Debian stable users' workflow hasn't been broken.