Earlier quoted context omitted.
Donald Trump is not the Republican party.
You can say that when any significant percentage don’t follow him in lockstep. Very few elected officials are willing to disagree with him in public, most backed dishonest claims or opposition to public health measures, and he has high approval ratings from Republican voters: it’s his party.
I'll point out that, now that Donald Trump is out of power, many in the GOP in general have been rather quick to turn their backs on him and outright criticize him. While he was in power, sure, Republicans politicians were politically savvy enough to side with him, knowing that the alternative was suicide. But there is now room to disagree with Trump and we're seeing many (like Mitch McConnell, and you don't get more Republican than him!) use that opportunity to distance themselves.