Nah, I've been going to WDW world constantly for years and years, and the crowds are real. There are no quiet periods anymore. Mid February, middle of the week? Doesn't matter, still a shitload of people. The days of Eisner-era California Adventure where a park could feel intimate and sparse in crowd level is long dead (for good reason, since Eisner-era California Adventure sucked except for Soarin Over California).
I don't follow Disney resort occupancy too much (
it's at 92% on average it looks like, slightly down from
94% reported in 2019 - but that's not going to send anyone into a panic), though Disney is over here opening resorts like the Riviera and selling rooms to non-DVC members for $600+ a night (unless you're a Florida resident or Disney Visa cardholder, where you'll get a limited time deal of staying at about $400+ a night instead), and these rooms are selling out more days than not. Room availability is alright during off-season mid-week, but if you dare think about getting a room on a Friday or Saturday (even in February), then your options are very limited.
Disney is a busy fucking place right now. There's never a day it's not busy anymore.