Gun control advocates object tto avoidable gun massacres in schools, malls, and other public places.
They're not remotely comparable.
The obvious difference is that if a woman has an abortion it's fundamentally a private matter. The outcome affects a single person. Or two people at most.
The outcome is not a line of ambulances and coffins and a traumatised community of teachers, parents, and neighbours.
Of course they're framed as if they're equivalent freedoms, because in the US "freedom" is a master-frame that can be used to justify almost anything.
And that's the real problem. One group consistently uses deceptive single-issue appeals to emotion to gain and hold political power. If there are no real issues to appeal to, they'll quite happily invent some. They fundamentally don't care what the issue is as long as it's politically useful.
The other group actually cares about outcomes - not just in a negative sense of wanting certain things not to happen, but in the positive sense of expanding political access to everyone in the community for the benefit of the entire community.
What's missing - in the US particularly - is a political system which makes this fundamental distinction clear and explicit. Democracies have few defences against deceptive framing used for political grift.
And that's not a good way to build a better future.