In my experience the people who, when asked about the technical merits of X, immediately dive into value judgements of a “community” around it are best ignored.

If these types of people are in leadership positions, it’s too late and you need to move. If they’re below you, then you need to limit their reach and upward mobility.

Usually fair application of performance standards will flush them out anyways. Often people like that in your organization are shielded by a manager that’s protecting them.