I don't know of any responsible Democrat politicians who is advocating for the prohibition of all guns. That is Conservative Propaganda Machine dogma, with no basis in reality. During the Obama administration, SCOTUS reached one of their only decisions regarding the 2nd Amendment, not full prohibition, just in certain large cities, and dismissed it. The Dems weren't happy about it, but they accepted it, and there hasn't been any real gun legislation since.
Some have proposed some common sense restrictions on certain types of weapons, age of ownership, etc., but MAGA will not allow ANY new restrictions on guns, even though we already have LOTS of restrictions already.
Nobody is trying to take anybody's guns away, least of all Democrats, who actually respect the Constitution and SCOTUS. When blanket gun restrictions come, it is a guarantee that it will come from MAGA. Trump has already said that he wants to take guns a way first, and deal with the legalities later.
The moment MAGA starts to think that guns will be turned on them, guns will be made illegal.