Ahh no. Take a look at the Touringplans crowd calendar. Most days from June-August are about a 5 out of 10 on the crowd calendar. In 2019, they offered free dining all summer long, because attendance was so low. Spring Break reaches 80%, Christmas reaches 100%. Summer is actually below the annual average of 60%.
Here is a very good article about it as well:
Summer crowds have been low at Walt Disney World the last few years, which bucks conventional wisdom that it’s peak tourist season in Florida. Summer 2020 is likely to be the least-busy stretch of the year at WDW, even though Star Wars: Galaxy’s Edge is now open and both Remy’s Ratatouille...
www.disneytouristblog.com
Years ago, July 4th saw 80% crowds. But the last 3-4 years, summer has been relatively empty.