More context - not to discourage you from reading, understanding and arguing from the primary text, but because many of these protesters are determined NOT to read any part of the book and NOT to listen to or consider Stock’s arguments. Their case rests on an intentional, constructed MISUNDERSTANDING of her work and views. (I'm not claiming that any specific individual is deliberately misleading others, but the repetition of a rumour one hasn't verified IS misleading and is an example of spreading disinformation).
As Stock herself points out, in her recent comments about the objections to her upcoming Oxford talk (linked at the bottom, as I can't get it to link here without deleting part of my text): the crux of the argument against her is that SHE is a bad person, and therefore it would be dangerous and wrong to listen to or consider ANYTHING she has to say - which logically precludes reading even sections of her book or attending or watching any of her lectures or presentations. Here is a current example.
The main complaint about Stock, which precedes the book and is naturally much more important among people who haven’t read the book, is that she signed the 2019 international Declaration on Women’s Sex-Based Rights. Her detractors typically openly oppose not only women’s rights in general but (crucially) any opportunity for women to speak freely about those rights. Stock is also vilified for her status as a trustee of the charity LGB Alliance (UK), which is attacked for focusing on sexual orientation rather than gender identity - although the many charities who do the converse are not similarly criticised.
There’s a video from June 2020, before Material Girls came out and when she was quite a bit less well-known/infamous, of Stock in conversation with Siân and Emma, two British transwomen who transitioned in the ‘90s. Unfortunately I don't think the video is available anywhere now, as Emma took a break from social media and her "Brompton Road" channel is deactivated. But it was very interesting to see the view of Stock's work from actual trans people with some experience and perspective over time, in contrast to the vitriol from people who know someone who knows someone who has an opinion about how “trans rights activists” (frequently not themselves trans, and very often themselves misogynistic and homophobic) feel about the current climate and Stock’s views.
If I were speaking face to face with people determined to stop Stock from speaking at Oxford, I'd start by pressing them very specifically about WHY she should not speak, WHAT she has said that is wrong, WHAT she would have to change in order for them to admit that it MIGHT be OK for her to speak (this is critical). To go out and arm yourself against any and all objections so that you might break through using Stock's own ideas and words to is admirable, but it may be pointless when the issue is NOT grounded in or even congruent with her words or her beliefs.
Link to Stock's recent comments via YouTube: