If a number of people agree with one another but not with one or two others on a thread that is not a pile-on. It is a disagreement.
I can't say I have seen anyone following people from thread to thread to disagree about other things, but I respond to posts rather than posters. I often agree with things that people say one one thread and not on another - it would be odd if that didn't happen, IMO. Equally, there will be times when people disagree about one issue and also on others. That doesn't mean that one poster sees the other as so important that they 'follow them' around - it's just that they don't see eye to eye.
I also don't see closed-mindedness on the part of the so-called 'GC', unless that simply means not changing minds, which is true of posters on both 'sides' of this issue. I don't see minds being opened to consideration of women who are fearful of violence, or concerned about their rights being eroded - instead I see accusations of having a 'victim mentality', and of being 'vile'. Nothing open-minded about that.
As for 'spreading hate' - that is also a low blow. How many times do we have to say that there is no hate involved in standing up for women's rights? It is not that we have anything against transpeople - just that we don't believe that they have changed sex, and we don't want men to be treated as though they are women based on their own say so.
It seems to me blindingly obvious that allowing self-id leaves the field wide open to abuse, and that it will be women who suffer. If others disagree there is nothing I can do about that; but my refusal to back down is not a sign of 'closed-mindedness'. It is simply a case of not being coerced, browbeaten or bullied into submission. Would you prefer it if the so-called 'GC' people on here allowed that to happen. VS and Glorianny? Is 'closed-mindedness' a synonym for not bowing to your opinion?
Bear in mind that when you consistently refuse to answer questions you are not giving people any opportunities to open their minds - I see 'closed-mindedness' as having a POV that you (generic) refuse to debate, discuss or otherwise explore, but simply keep stating it over and over until either the other 'side' backs down or you have given yourself the last word by saying no more.