The wheels are already coming off of their little Mar A Lago raid and they’d love a distraction from that. Even if they go all in and indict Trump, as some suspect, let Trump’s legal soldiers handle it for now.
If they go all in then it’s win-all or lose-all for them and they’re not holding the cards to win-all.
Anything that puts Trump on the front page is a win for the Democrats.
It gets their base riled up and distracts from the economy, border, and crime.