This page has a tribute to the busted chain, and shows a menu that said it was founded in 1963.

Obviously not.

I wonder if the number of uniformed food service employees has been halved, or remains about the same. I've no idea. I suppose I could ask AI. Okay, grok, blah blah

The number of people in food service who wear uniforms has neither clearly increased nor decreased overall—it's stayed remarkably stable for decades—but the style of what counts as a "uniform" has shifted toward more casual, flexible, and employee-friendly designs.

Sounds about right. More jeans and logo-stamped shirts, less Angelica.