@oxenfree many people on gnusocial are angry at mastodon for breaking standards, not having regard for how their system federates with others, blocking instances over criticism, and for some the cardinal offense lies within generally being more to the left then gnusocial.
As it is contained to gnusocial its really easy to ignore, however bein ghtat YOU are on gnusocial you may be concerned about mastodon disapearing from the federation as they switch protocols.