This far-right political power is not "MAGA", which is the trump label stolen from Reagan. With or without trump it would be the same. It's made of the powerful donors and the corrupt Republican politicians and propaganda machine to manipulate voters.
trump is called 'the head of the Republican Party', but he's not even close. He's this side figure who is the nominal leader - the one getting the votes and leading for president - but he's not the one determining the main agenda. He just 'follows orders' and signs the bills he's handed and nominates the judges handed to him by the Federalist Society and says how he's the greatest president in history.
Reagan was a force in politics. He changed the political culture for the worse. trump is not. He's a flash in the pan creating a sea of red hat wearers who are irrelevant except to be milked for their vote, with all the politicians wearing the hats to 'ride the trump train' and get votes, but trump isn't changing the Republican agenda nearly at all. He's just a 'front'.
And people need to understand that, to understand the issue is the party and not trump. trump is as bad as people say, but they need to understand the party is the problem.
Biden is wrong to tie the right-wing judicial corruption and agenda to trump, even though trump nominated the judges. trump had nothing to do with the decades-long war to take over the courts, nothing to do with the Federalist Society, nothing to do with the over half a billion dollars spent to confirm the right-wing judges, nothing to do with the donors and their agenda. He just nominated the names he was handed.
The country should learn more about the issue than to call it the MAGA movement and tie it to trump. They should learn that abortion is just the 'fluff' issue used to get votes to get power, that what they really care about are rulings to undermine democracy so they can seize power, and to take away the people's power to limit what the wealthy do. Abortion is just a side issue for them, not what they care about.