When we went in March 2018, FOP had 3 hour waits until park closing. Yes they had the FP system but if you weren’t lucky enough to get one (which was most people) you either had to get to the park 60 minutes before opening and make a mad dash or accept your fate and wait.
7DMT wait times weren’t much less.
My point is this - the people on this board who are used to a streamlined experience are a small percentage of visitors. Many people go to Disney and wait in 3 hour lines and don’t know any different. Their guest experience hasn’t changed without FP.
edit: typos