I happen to have a very recent data point on this. I was on the highway this morning with a Pro behind me. I pulled over to let it pass and could very clearly him hit the gas and downshift (while he was still behind me) and then he slowly crawled by.
I've always had a pet peeve re: slow automatic cars with loud exhausts. IMO it'd better be a big-block v8 melting tires if you're going to hit the loud pedal on your slushbox. I'm going to keep mine nice and quiet so others don't know how much the 4.0 is suffering
This is a weird tic of mine. I have no problem with slow and loud if it's a manual. Shrug.
YMMV.