If it's clearly demonstrable that being anti-genocide would keep Democrats in power longer, that increases the chances they'd be anti-genocide.
I get that Americans aren't the ones being genocided, but some people understand that Palestinians have the same right to life as Americans, so it's fine to treat this as if there was an active genocide happening in America.
Both parties are pro-genocide, but one side might actually cave because their constituents are generally anti-genocide, while Republicans tend to be happy with it.
I see it as totally plausible that Biden loses 2024 because of a sharp drop in the support from anti-genocide leftists, and that it could end up being extremely clear to the Democrats in power that they need to concede this issue to us in 2028.
If Biden wins in 2024, it'd be a clear signal that their current strategy is working, just guilt everyone into voting for a Democrat no matter what, even if they're actively encouraging genocide.