Anecdotally this is also my experience. I grew up with shoes off in the house, but even up to the early 00’s it seemed to be a cultural outlier in the US.
These days I think the majority of people who I go over to visit have a shoes off rule. Seems like the split is between the older half of millennials and up shoes on, and younger half and down shoes off for the most part.
I haven’t thought about Hooters in years. It always did seem like a dated concept from the 1980s that was somehow still clinging to life in the 90s. It’s still in business, so obviously somebody must be going to them, but I don’t know if I’d call it normal for most Americans.