Presumably this is the problem if you have a change of Government just as a bill is about to come into being.
Not sure of the powers of a Minister to put "on hold" something that Parliament said should become law in a few days.
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If you read all of the 2 articles I posted links to above, it seems to be as much about the financial cost to universities should it be found they had breached someone's freedom of speech. As they go on to talk about other financial priorities. Almost implying if there was no financial implication it would not have been halted.
So suspect despite what seem like principled considerations about free speech, it is that no university wants to have to deal with possible fines, on endless law suits.
IMO part of the problem is not the over the top comments about full on racists and anti-abortionist being given a platform, but much more the way factionalism is now how (not just students) people launch personal / moral attacks on those who have views they dont agree with. ie against GC women, accusing them of being transphobes and causing distress, and as Suella Braverman did saying any criticism of Israel / Zionism is anti semitic, even when it is Jewish people saying it.
Its like everyone wants to out Trump Trump, whose only method of making a political point is to personally insult someone who has said something he doesn't agree with.
Although judging by the odd occasions I watch chat / discussion shows on tv, I think quite a substantial part of what passes for political debate currently has already taken this direction.
And not sure we can go back.
ie young people are growing up with this as the norm.