He didn't "call it out as a secondary concern", though, did he? He did an interview with a far-right newspaper in which he defended her uncritically, talking a load of culture war shite, probably looking for easy gammon clicks while promoting a play he's in:
The Telegraph wrote:Of course, Fiennes’s position at the front-line of the arts could be hazardous, as the culture wars with their fast judgments and attempted cancellations intensify. He offers up particular despair at the treatment meted out to JK Rowling in the wake of her engagement with trans issues. “I can’t understand the vitriol directed at her. I can understand the heat of an argument, but I find this age of accusation and the need to condemn irrational. I find the level of hatred that people express about views that differ from theirs, and the violence of language towards others, disturbing.”
He also offers me a keenly felt defence of artistic freedom, in the theatre and elsewhere. “I get worried if it’s decided that certain classical plays are irrelevant. I think often there’s a superficial reading – Restoration drama is ‘colonialist, hierarchical, quasi racist’. But they’re just plays. You can turn them on their head. The danger is of labelling stuff. These texts are there – so pull the humanity out of them, pull out the stuff that’s relevant. If you’re going ‘it doesn’t tick these boxes’, you’re lowering the portcullis of judgement before you’ve even got into the room with it. I think that’s troubling.”
He praises artistic free-spirits from other disciplines – citing Picasso and Henry Miller. “We need to have those voices that risk being offensive. How sad if we sat on any expressive voice that could shake the scenery, that could get inside us and make us angry and turn us on. I would hate a world where the freedom of that kind of voice is stifled.”
JK Rowling is a bigot and pretending she's somehow being bullied by those awful woke trans people isn't remotely a "fair" comment, it's a contribution to that bigotry.