There's a part of me that wonders if TSA isn't intentionally making this as onerous as possible to push more people to do Precheck. Granted I haven't flown since late July, but these new procedures don't seem to affect folks going through the TSA Precheck line. The last time I went through the Precheck line, I didn't have to take anything out of my checked bag or my laptop case. they just scanned both bags and I was on my way.
My wife and I have TSA Pre. We went through the line at MSY on our way to WDW with our two kids back in April. My daughter had packed one of her babydolls in her backpack. This particular doll is one of those that is intended to be filled with water. Of course, the TSA agent flagged it and had to search her bag. We were terrified that they were going to try to confiscate the doll because it had way more water in it than is allowed. However, the agent, seeing the distressed look on my daughter's face, just had us empty the water out of it and let us go through. I have zero doubt in my mind that had we not been in the Precheck line, they absolutely would have confiscated her doll.