This is the problem. We can’t make comments on it, because then apparently we’re ‘transphobic’.
The problem began when people started disregarding the biological male in a trans woman. Recognizing that they are biologically male is not an insult, it is a fact. Call them a woman yada yada yada, but the fact is that they are biologically male.
Why is this a problem for feminism? Because biological males are the oppressors of biological females. Just because trans women identify as women, they are still factually a member of an oppressing group. I am a white woman - so I am privileged for being white, but oppressed for being a woman. Trans women are privileged for being biologically male, but experience hardship for being a trans woman.
After the disregarding of biological fact, women were not allowed to criticize their oppressors’ ‘right’ to identify with their struggle - because then they were ‘oppressing them’. But, like what I said above, biological males ARE our oppressors, and we have every right to feel uncomfortable and quite frustrated that they can easily just ‘identify’ as one of us whenever they choose to. That is before we even get into the argument about gender being the center of female oppression, therefore biological males glamorizing it is oppressive.
The most horrible thing about this situation, is that women are not allowed to have a voice on the matter. Gender specials on tumblr can pretend that radical feminists oppress them all they want - but in the real world, you are called a ‘bigot’ for even questioning trans politics. Of course they get treated shit by typical white males who are against anything a bit odd; but radical feminists are NOT critical of trans politics for that reason. We don’t send trans people death threats, rape threats etc. but we recieve them off the gender brigade, which is male socialization coming out in them.
So, to answer you’re question - we kind of can’t say much in the real world, because people will jump down our throats about being bigoted and oppressive. Mostly because they will not take one fucking look in what we have to say. Therefore, tumblr and social media is our best bet. It gives us time to write, think, analyse - and for people to read what we argue before jumping to conclusions.