Here's a 1-1/2 min video replay of those shouts.  You'll hear a majority of Repubs hollering their disagreement in unison, as Biden is telling some whoppers.  Not just MTG who the media like to single out. Republicans were voicing an opposing opinion in the same way as when Dems shout "YES", or other words of approval while Biden is speaking.    

Thus it differs From Rep Al Green standing and making a speech while Trump was delivering his speech. 

And recall that the censure vote on a subsequent day was passed with bipartisan votes.