The situation is a little more nuanced than that - it's the way they are trying to make money from Zig that people find objectionable. In particular, what they

The situation is a little more nuanced than that - it's the way they are trying to make money from Zig that people find objectionable. In particular, what they are doing could damage the future of Zig and potentially splits the ecosystem. In addition, they have done some obviously scummy things like try to register a trademark on Zig in Japan.