The "two state solution", which will never happen, is the go-to talking point for anyone who wants to look like they're working towards peace but who are really just stalling while israel carries out the ethnic cleansing. Look at the borders, they were specifically drawn up to fracture Palestine from the beginning. No two states could exist under such a ridiculous configuration, it's no mere coincidence. It's been talked about for decades and yet we are no closer to that goal than we were all those decades ago. So of course Harris, known for saying whatever she thinks will advance her career the most, will parrot that same line.
As for the ceasefire, that was the work of Biden, who was very busy sending billions in weapons:
bypassing congress to do it: https://apnews.com/article/us-israel-gaza-arms-hamas-bypass-congress-1dc77f20aac4a797df6a2338b677da4f
$1 billion: https://www.cnbc.com/2024/05/15/biden-administration-sending-1-billion-more-in-weapons-to-israel-congressional-aides.html
$20 billion "two days before scheduled cease-fire talks begin in the region.": https://www.cbsnews.com/news/us-approves-20-billion-weapons-sales-israel-hamas-backs-out-cease-fire-talks/
$8 billion in 2025, just before his pathetic ass was leaving office: https://www.bbc.com/news/articles/cpvne94v1rdo
The infamous 2,000 pound bomb shipments of which he paused a single shipment: https://www.reuters.com/world/us-has-sent-israel-thousands-2000-pound-bombs-since-oct-7-2024-06-28/
israel somehow managing to use 2,000 pound bombs even though Biden paused a single shipment: https://www.washingtonpost.com/world/2024/09/29/israel-bomb-beirut-nasrallah-death/
Here's him claiming he'd stop sending weapons (note the date): https://www.cnn.com/2024/05/08/politics/joe-biden-interview-cnntv/index.html
Biden set out red lines and didn't care when israel crossed them: https://www.theguardian.com/commentisfree/2024/oct/17/netanyahu-weapons-biden
So yeah, democrats are very good at saying the right things, but will continue to do the wrong things. Even then, sometimes democrats will just go out and say the wrong things as well, here's Harris saying she would NOT support a weapons embargo on israel: https://www.bbc.com/news/articles/cg798l439ydo
Tell me, how sincere is a ceasefire deal when they're continually supplying one side with more than enough weapons to flatten all of the other side? How sincere are they about holding back israel when they set red lines and then don't change anything when they cross them? There is a reason why the ceasefire finally went through when Trump entered office and it's because it's all for show and doesn't actually matter because israel is only using it as a pause (and PR stunt) before continuing the genocide.