And yet you are arguing (instead of just fixing your mistake). Why?

You even went out of your way to change the post: it used to say "Codecov is now Open Source"[1]. In the time since, you have changed it so "Code is Now Open Source"[2].

This is notable for two reasons: it means that it's not outside the bounds of reasonableness to ask why the post hasn't changed since you've been confronted about the discontent, but it also raises questions about why you made that particular change in the first place. By a reasonable guess, I'd bet it has something to do with the fact that writing it as "Open Source" (rather than merely "open source") does real damage to any argument that the latter is generic and doesn't have any particular significance, thus allowing you to repudiate the OSI and the OSD. Which, of course, means that you guys are total fuckin' slimeballs, since you are now actively taking steps to cover your tracks.

1. https://archive.is/aSH9K

2. https://archive.is/pyd5b