I think it's been mentioned already, but if the allegation is "Someone in management wouldn't let two consenting women, one cis and one trans, room together at an event important to their job and career" and the seemingly just announced solution the company's president gave yesterday is "we made it policy for workers to be in separate rooms by default"...
Then the implication is that discrimination wasn't resolved, just worked around and accommodated at greater effort and cost. Maybe even to the detriment of all workers due to increased cost of attendance likely reducing number of attendees.
The message is you'd rather both change policy and pay more money than let trans women do their convention work like everyone else.
Framing that as an evolved approach is, well, very reminiscent of the bathroom bill debates in a bad way.
I would consider this to be directly "transphobic" in a way that's as fresh as yesterday, rather than "years ago".
It's a big bummer to me, as a fan, advocate, and GM.