Unless you relish living in an authoritarian regime, people differ and disagree on all kinds of social and political views.
If there are deeply concerning public policies and legislation that can affect people's lives, you need broad public discussion to build common ground and common cause, so that effective citizen opposition can be sustained.
A mature democracy should be able to handle a diverse range of views, even ones that people might find offensive.
There were plenty of religious groups that opposed the deeply flawed Hate Crime Bill in Scotland, and reading some of their submissions to parliament they sounded far more sensible that the spineless secular organisations that didn't seem able to make a strong stand for free speech and liberty. What a bizarre and shameful state of affairs!
The most important common ground that people in Scotland have at the moment, in spite of deep disagreement and differences on other issues, is that sex is immutable and relevant in many aspects of our lives, especially for women. People shouldn't be harassed, penalised or criminalised for refusing to comply with ideological beliefs (such as everyone has a gender identity, people can change sex, men are literally women in every sense if they say so etc).
Many of these ideological beliefs are being pushed by the government and civil service, which is undemocratic.
Children are being indoctrinated in schools and parents are being undermined by teaching materials withheld from examination, and children being encouraged to keep secrets, 'changing gender' without their knowledge etc. This concerns ALL parents irrespective of their personal views on abortion or same-sex marriage.
The safety and rights of women and children don't 'belong' to feminists - everyone has a right to be concerned by what is happening in Scotland and how it affects them personally or their families and loved ones. A conference that brings together a broad range of speakers who might be bitterly opposed to one another on other issues, but have enough maturity to recognise a bigger threat that is affecting schools and universities is a good thing.
There's nothing stopping other groups and feminists from organising their own conferences - I think there was a public talk organised by Sole Sisters and the venue (Augustine United Church I believe) refused to host the event at the last minute.
I support the right of people to meet and discuss issues that concern them, irrespective of whether I agree with their views or not, and even if it's on topics that I disagree with, or find objectionable or offensive. Because unless people are actively calling for violence or harm, they have a right to express themselves. It's the principle that matters, not whether your personal views and politics align with everyone you meet.
It's sad that this needs to be stated again and again in a Western democracy. I have lived in countries where people can only dream of the sort of freedom and plurality available to people in the UK.