We are not robots and telling people how they should feel and how their mood should not be influenced by this or that is akin to saying to depressed people to just stop being depressed. The divide-and-conquer method you appear to be using is worthless for human psychology.

The cases of a niche culture destroyed by dilution are so common that there are essays around it (e.g. Geeks, MOPs, and sociopaths in subculture evolution), so it seems to be a very normal and human thing to happen. Blaming the individual members for failing to feel differently is not going to fix that.