When I first started coming out as transfem, a lot of the cis women in my life initially seemed very supportive, and sometimes even offered to give me help and guidance. Even waxed poetic about the importance of "Sisterly bonding".

And all of that melted away, the moment actually asked anything of them.

I'm colorblind, so skills related to makeup and clothes are a huge struggle for me.

I tried talking about my frustration to a cis woman I know, hoping for some kind of guidance or sympathy.

Instead she disparaged me, and said "well you don't want to know about that stuff anyway. You don't want to be a vain removed who only cares about looks".

Cis people, so often, see trans people's desires, even for minor things, as some awful burden.

I'm no trans separatist or anything, but like you said, it's hard to really trust cis people when even the "supportive" ones are this hostile