They didn’t argue that in good faith. They knew the likelihood of that actually happening is near zero. If he was going to be impeached for anything at all, it would have been for inciting an insurrection – which is actual treason – and we all saw how that went. And they didn’t have the trifecta back then. There’s even less chance of that now, and they know it.
To my understanding the ruling doesn’t affect impeachment. Trump’s team argued that impeachment was the check and balance on presidential power iirc
They didn’t argue that in good faith. They knew the likelihood of that actually happening is near zero. If he was going to be impeached for anything at all, it would have been for inciting an insurrection – which is actual treason – and we all saw how that went. And they didn’t have the trifecta back then. There’s even less chance of that now, and they know it.