Good question. Whilst the revised policy is obviously an improvement, as is the invitation for advice from outside the SWP I wonder why it took so long and what prompted the review and implementation. I am not in contact with anyone who is still a member although I am with ex-members who still do some work with them on some campaigns but none of those mentioned anything.
I would have thought and with it coming up soon Marxism at ULU would have been one major reason for SWP making the statement.
It will give less credence to those (rightly in my opinion) opposing this.
Recently in PCS elections and other policies they've done pretty bad and get the impression that 'coming clean' and apologising may help them in UCU? (Although haven't any evidence for this, just rumour)
Also as other people have pointed out; there work with the 'yoof'.
They appear in many cases to put a lot of work into 'woke' i.d. politics; siginificantly trans/ladyboy stuff, e.g. trans pantomime thing, recruited and in some cases lost trans/non binary members. It'd no good having some abstract ultra politically correct i.d. politics, when you've got complaints of misogyny and with Simon Murch worries about paedo nonces around your neck. ( Although there's very little that they could have done than they did concerning S. Murcht than they did; any org. could have this problem)
There has also been concerns with bullying and lieing in and around Palestinian campaigning. e.g. Young woman in Oxford Miriam who opposed Chabbad Rabbi; Eli Brackman at Hannukah celebration who, when he said that those who do not support 1$rael are not welcome, retorted by exclaimin exclaiming, 'peace on all sides'
This was used by local SWP hack Ian McKendrick for their own factional and opportunistic reasons to attack Miriam as, 'Anti Semitic'.
Unfortunately this was taken up by Sukant Chandran who started accusing everybody of being racist. However during this process several other similar complaints were made around the country, significantly among activist who wished to push Palestinian Campaign beyond a .safe space.'
The SWP, in usual hysterical 'crude empirical' hysteria appear to see the horrific situation in Gaza as similar to Vietnam; one supporter telling me that rg Al Aqsa Flood was like the Tet Offensive.
I should imagine it would make it easier for the SWP to recruit without the excess baggage of accusations of being. 'rape apologists' around their necks.