Then it seems we just have differing definitions of "reasonable," I suppose.
Your initial statements suggested a scenario more along these lines to me.
Feminist: Trans people are welcome here.
Trans person: *goes online, reads some blogs*
Bigot: *poorly spelled, inarticulate hate speech blog*
Trans person: You're [redacted], Feminist.
Feminist: wat
That, and if a feminist space is actively reaching out to trans people then it stands to reason that it would be unlikely to actively be out to waste its efforts by being bigoted to them as a body or to sanction members of that body doing it individually.
It could suggest a whole lot of things, really. I don't pretend to understand the mindset of people who tell people who actively look miserable to smile and attempt to use the power of positive thinking to brainwash themselves into feeling better. Seems a tad irrational, and thus harder to grok rationally.