If the Democrats were smart they would make a big push for this. It may be symbolic, but it'll remind people of where Republicans stand on women.
Plenty of women don't support the ERA.
The pro-life movement has a lot of concerns about how courts would interpret it with respect to abortion. And that includes pro-life women. Now, this amendment sounds nice, so most people who don't know every detail about its potential effects probably support it, but that is mostly surface-level support.
Well yeah, the abortion rights debate is about women's rights. The more people realize that, the more support for the pro-life movement will collapse.
Back in the 1970s, the perception that supporters of the ERA shared that viewpoint is what galvanized opposition and led to its defeat. That's one reason supporters today insist that ratifications can't be rescinded and that there's no need to start over from square one. Even if the ERA could get the necessary two-thirds of each house of Congress, there's no way it gets 38 states to ratify it today. If the ERA is tied to abortion, its support for the ERA that collapses, not the pro-life movement.
Yes I'm aware of that, but it's not the 1970s anymore. Most people today are very leery of being tied towards sexism - even pro-lifers will try to claim they support womens' equality, that their position is about the fetus, etc. I've noticed a lot of centrist people even buy into it.