I think that it would help if you were to suggest a term people who don’t want to ‘shut down discussion about related topics all together’ should use. Otherwise, the effect (although perhaps not the intention) of deprecating the term ‘attacks on trans people’ is that the sort of discussion you admit is possible theoretically will be impossible for want of a suitable term to designate the sorts of attacks it concerns.
In practice people complaining about attacks on trans people almost always want to shut down discussion about related topics all together.