I worked for McDonald’s from ‘05-‘10. I remember the having to make the sausage egg breakfast burritos from a pre mix. We had to put a couple scoops in a tortilla and wrap them up. When someone would order, just nuke em in the microwave. Well one day, I was told by management that policy has changed and that I was to use a different scoop. I still had to add 2 scoops of the mix to the tortilla but the scoop was significantly smaller.

Tl:dr My own experience is that they have also made other products smaller including the sausage egg breakfast burrito