Humans are social animals. For such groups, creating a coherent shared identity, or culture, is essential. To achieve that, groups have developed all sorts of methods to put pressure on people straying too far from the current consensus–laws being only the ultima ratio in a democracy, with most issues settled much earlier, often even without anyone consciously noticing, through softer methods of signalling (your scorn being one example).

There's nothing wrong with that. If opinions have any power, some must be worse than others, and some may be actively harmful. Therefore, it is illogical to expect the "freedom" to publish opinions the majority considers immoral while expecting complete immunity from any reactions,