We were in Orlando Nov. 10-14. I can understand OPs original post and comments because professionals like TP that take things like party, non party days, Jersey week, holidays into account and for our day at least underestimated crowd levels. That means we like OP were expecting lower crowds than what we got (a pretty reasonable expectation given that professionals got it wrong too). And we like OP said "What?" This is November right?"
We just did one Disney day -- Monday Nov. 13th the Magic Kingdom on a non party day. The prediction for this non-party day was a 6 (A higher prediction than non-party days, but we didn't want to spend money on a party ticket and wanted to see fireworks and do rope drop all in the same day). Actual crowd was a 8. That's actually a significant difference. Our one mistake was waiting in the long 7DMT ride (Here too we were teased with a Disney wait estimate and a TP Line App estimate that were shorter than our actual experience). It happens sometimes. After that we changed fast passes around (got rid of the Pooh and Peter Pan FP in favor of Haunted Mansion and Pirates -- originally expected to be short lines). We also skipped Jungle Cruise, Big Thunder, and Small World (yes a long line for Small World??) because of lines and had a really nice day. We only did things with 25 minute or less line. Rope drop got us walk on for Space Mountain, Buzz, and Teacups. We saw the parade, two evening Firework Shows (Once Upon a Time at 9 p.m. and Happily Ever After at 9:45). We did some wandering around too, just kind of soaking up the atmosphere of the place.
Ours was not the only non-party day with TP estimates low. I saw that on Saturday Nov, 11th the prediction was an 8 and actual a 10 and on Wednesday the 15th (we were already home -- the prediction was a 5 and actual was a 7).
Thanksgiving week Monday - Wednesday had crowd levels of 9s and 10s at all of the parks. Quite a few 9 predictions ended up being 10s, and my personal experience is that there is a big difference between and 9 and 10 (10 being significantly more crowded.)
This is not meant to be a touring plan crowd estimate bashing post either, as they nailed predictions on a lot of the days, but not our one day at our one park.