If a woman had been described as looking like something from the Les Dawson show, lots of women on here would be rightly angry. But say it about a trans woman, and that's acceptable, apparently.
It wouldn't, IMO. And I'm not defending the threads or the comments. But I will suggest (genuinely, not disingenuously) that for many people this is a learning curve, and there may be an assumption from some that a man who wants to transition must be doing so out of a desire to be as 'feminine' as possible.
The first transwoman I met was many years ago (early 90s) was surgically transitioned, and she stood out in the workplace because she was dishevelled and came to work in leggings, tee shirts and trainers when most women wore dresses. Her hair was roughly tied back, and she wore no make-up. A lot of people (me included) wondered why she had bothered to transition, given her apparent reluctance to look like a woman. Now that I have met a lot more transpeople, I realise that this was a foolish way to think, and that they are as disparate as anyone else when it comes to attitudes to personal grooming. We live and learn.
I don't think that jumping on people, as opposed to pointing out that they might be looking at it the wrong way, is particularly helpful, or conducive to encouraging tolerance.