AFAIK, the author isn’t anti-proprietary. His goal with the newsletter is to share news that relates to self-hosting, which isn’t limited to FOSS, which is something he mentioned in one of his recent newsletters (it’s a common criticism he gets apparently). And there’s the reality where the vast majority of the source for selfhosted software are hosted on Github.
AFAIK, the author isn’t anti-proprietary. His goal with the newsletter is to share news that relates to self-hosting, which isn’t limited to FOSS, which is something he mentioned in one of his recent newsletters (it’s a common criticism he gets apparently). And there’s the reality where the vast majority of the source for selfhosted software are hosted on Github.