No. Ad hominem arguments are not intrinsically bad or disrespectful. There are good ad hominem arguments and bad ones, just as with other types of argument. Also, I can legitimately point to the fact that your arguments are partial without feeling obliged to fill in all the gaps - chiefly because my reasons in trying to address them aren't to convert you (clearly that isn't going to happen) but to clarify for you why it isn't remotely constructive for you to be posting on this thread in the manner you do.
But, having said that, here is an example of an argument of yours that seemed at best muddle-headed and at worst cynical. I believe that in an earlier post you said that NC's argument boiled down to the fact that the RCN was seeking to be a "trans-friendly organisation", and she was presenting that as wrongful. (Forgive me if I have misremembered the detail of your point..)
Well, no, that was no part of her argument whatsoever. Her claim was a different one - that RCN had adopted gender ideology, which she summarised as the belief that TWAW and TMAM.
Of course RCN, and the NHS, should be trans-friendly. It is their duty to treat all patients and staff with an equality of compassionate respect, no matter what their beliefs or what they look like.
That involves taking steps to minimise, as far as is practical, the discomfort that a trans patient is likely to feel in an environment where their sexed body may well be relevant to their illness, their treatment and the ward on which they are accommodated. Personally, I'm open to the idea that those steps should include trying to avoid gratuitously spiking their gender dysphoria by using correct-sex pronouns in their hearing, though others may disagree.
What it doesn't involve is believing that trans women are women, or pretending to believe it, or requiring others to believe it, or tolerating by inaction an atmosphere in which people within the organisation feel entitled to aggressively police those who don't believe it.
Two separate things - being decent to transpeople on the one hand, and adopting a set of highly contentious (and I would say false) beliefs on the other. And yet you elide them. Why?