The grading comment was about taking more than 2 minutes for a replay review, not the new timing rule if the clock should have stopped and would start on the RFP.
As far as the other rule, if you want replay to be used to make things black and white when possible you have to take the good with the bad. In this exact play without replay the half is over. It's not likely the official will be able to see the play end and look at the clock fast enough to see it should have stopped with 1 second left. Even if someone did they would know the game clock would start before the team was ready and it wouldn't be able snap it before it expired. But if you allow replay to address black and white rules (the time on the clock is black and white when using replay on plays like this). That's why they need to add rules like they did to not allow a team to get an extra play when they shouldn't have.
Many have mentioned the similar play from a couple years when they didn't go to replay and Shaw publicly supported it. There are instances where the supervisor is going to publicly support something, give different feedback to the officials on the back end. It's rare and used more if a foul is called that is technically right, but probably not big enough to be considered a foul (i.e. holding/DPI). Some calls are just going to be supported either way because they are going to defer to the judgement of the official on the field. This leads to understandable frustration from fans and players and coaches because it appears they aren't being consistent.
The slings an arrows on a call like this are going to come either way so you have to make the call, move on, and face the consequences. Who knows maybe that replay official was downgraded the previous week because he had an incomplete pass at the end of the 2nd quarter that landed with 1 second on the clock but he let it go and was downgraded for it. He didn't want to take the risk of another downgrade so he enforced the rule as written. A definite downfall of replay is it sometimes does take things that are better officiated by the judgement of the official in real time on the field and not precisely frame by frame on a video screen.
I think this is a very good and logical rule change, and I'm surprised it wasn't addressed after the previous incident. It was probably less of an issue or less impactful to the outcome of the game so it didn't have the staying power with the rules committee.