It is important to understand why these two amendments are coming from and why now. We've had messily compromised abortion laws in the UK for a long time. I'm saying this from memory and not Google, but I think the 1862 OAP Act makes abortion illegal, and the 1967 Abortion Act provides some exemptions from that.
A number of those exemptions are no longer rational (like two doctors having to approve) and the whole grounds for abortion thing has been a nonsense for a long time and especially since the advent of early medical abortion. Plus, recent reforms have catapulted N Ireland from being the only place in the UK where you couldn't get an abortion, to the UK cou try with the most liberal laws.
For years, pro-choicers have discussed introducing a new abortion law, but always worried that that would provide an opportunity for pro-lifers to flood it with amendments, the most successful of which would affect the very small but very vulnerable group of women who need late abortions. (The UK is generally supportive of legal abortion but very queasy about later abortions.) It was felt safer to stick with the messy make-do of the existing law.
So why has that changed now? Two things, mainly. First is that since the introduction of early medical abortion and then telemedicine (under covid), women have been able, legally and legitimately to have very early abortions with very little medical supervision. And there have been a number of cases where women were prosecuted and criminalised for what was seen as abuse of this eg. lying about their dates in order to use abortion pills in the second trimester.
It's not a good idea to lie to doctors and misuse medication, obviously. But criminalising women who do so is a really poor answer. It incentives vulnerable women to lie and conceal their reproductive situation even more. It doesn't help us understand what is going on and make any necessary changes in service delivery. And we don't do it in any other area of healthcare.
The second reason is that people (Inc Stella Creasy) are spooked about what happened in the US to Roe vs Wade, and by the noises Farage is making about abortion. They're worried that if we miss this opportunity to steer towards decriminalising abortion, we'll risk further criminalisation.
Decriminalisation isn't an abortion free for all, it's just saying that abortion should be conceptualised within UK law as healthcare, not as a criminal offence with exceptions. Until we do that, how do we get to having it resourced and provided appropriately, with NHS doctors trained to deliver it?
As for the hypotheticals about women now feeling free to do their own late term abortions, think about it. There is no way of inducing your own late abortion without putting yourself at horrific risk. And if you manage it and give birth to a live baby, you are still not allowed to kill it (there are laws - other laws!). And if you are so desperate/terrified/mentally incompetent that you attempt to poison yourself or beat your stomach or whatever, and you are rushed to hospital, should the doctors call the cops to haul you to prison, is that the best response? Is it really?
Abortion is healthcare. As with other healthcare, it works best when there is honesty between us and our healthcare workers, and good clinical processes to ensure drugs are administered safely and appropriately. It shouldn't be part of criminal law.