I'll copy here what is relevant of a comment I made about how the TCG "handles" community concerns here.
Year after year the WMF has forced out disruptive and controversial software projects. In 2013, it took a community revolt on English Wikipedia for the rollout of VE, which (as I understand it) was ultimately revealed to have been rushed out in part due to financial grant terms, despite it causing significant damage. In 2014 controversy over Flow erupted. It took over a year of kicking and screaming for the WMF to concede that it wouldn't necessarily roll it out globally in the future, and yet more months before it was removed from enwiki, and even then only under threat of a serious flaming at RfC. In 2015 Gather was introduced to enwiki. In this case indeed, actionable blockers were proposed: collections could not be deleted, collections automatically used non-free content in violation of the EDP, the moderation system was very hard to use, and enwiki admins were being expected to patrol it with no benefit to serious contributors of content. Only one of these things was addressed. Complaints continued to be raised about the rest of the problems, but Moushira Elamrawy, the liasion for Gather, instead of understanding and passing on the gravity of these complaints, tried to pacify the community without taking any action about the problems. Eventually an RfC demanded Gather be removed. Then Toby Negrin needed a lot of convincing that yes, we actually meant it, and we wouldn't allow him to kick it into the long grass. Yes, the proposal looked reasonable on the face of it, but all trust had broken down.
For years the WMF has needed to be coerced into listening to community concerns on major software projects. Time after time, staffers have tried to avoid dealing with the issues. Now the TCG says that, to slow down a deployment, the community must declare actionable blockers. It doesn't [explicitly] allow for philosophical differences of opinion. It doesn't mention a community outright rejecting a feature. It's a codification of the existing uphill battle communties face when trying to get their fundamental, deep concerns heard about a project in progress.