I have served as Parliamentarian of a national political convention. This is how the Byrd Rule or any other operating rule, is carried out. You are correct that Biden should not reverse such an opinion. And a majority of the Senators would be dead wrong to uphold such a breach of duty.
My article begins after both of those failures have occurred. It answers the question whether there is any court remedy, when all else fails — House, Senate and President.
John / Billybob
Bump.