Earlier quoted context omitted.
What's wrong with that is the reason trademarks exist: Confusion. If something is called "alpine-glibc", it's reasonable to expect that it's by the alpine people and supported like alpine. This, as we see here, annoys the alpine people because they now get bug reports and support requests from people using it, and have to direct people elsewhere. And when it doesn't work, they get the hit to their image even tho they…
I think it's clear from the website that this is based on Alpine and not part of the project https://hub.docker.com/r/frolvlad/alpine-glibc/ Without context, I think what this guy is pissed off about is that this project enables people to use alpine to run proprietary software.
In any case, the Alpine people would know, and they apparently think it's a problem.
>Without context,
But you have context here! It has issues with symbol versioning! There is "strange behavior and possible crashes, ". This makes alpine look bad, because people think it's the alpine project's fault!
> what this guy is pissed off
Please don't assume everyone is a "guy". In this case, Ariadne is not a "he" (she uses "she"), so a male-coded word like "guy" is ill-fitting.