Probably, but what if Dems take both houses in the inevitable midterm backlash to Trump and pass protections? The difference between a D pres to sign or Trump to veto is massive. Abortion is a top issue in American politics and will be for the foreseeable future. There’s no arguing with that.
I don’t even know what you’re saying now. If the Ds take congress in response to Trump, having Trump will be massive as opposed to a D? Well yeah, but in your hypo the Ds only take congress because of trump. The counter would be republicans taking congress if kamabla wins.
In either of those cases, it stays with the states.
If Trump wins, I think the issue goes away. Rs will be on notice not to make it a federal issue. I think the multi-partisan anti establishment coalition will do real damage to the uniparty establishment, and manufactured issues like federal control of abortion will take a back seat.