No shit Rousey was overhyped.
The thing is she combined the MMA hype train (happens in basically every division with at least 1/2 fighters at any time) based on some good performances + Main stream HYPE train which made people who weren't MMA fans think she was one of (if not) the greatest female athletes of all time.
Rousey effectively was the 135 Royce Grace. Many here thought she was very beatable but didn't think that any 135 LB women had the ability to stay on the feet long enough to win (or would fight like an idiot like Meisha did in the rematch).
But let's be honest, hype trains get derailed all the time on this forum and people try to forget about the fact that they were on them. Hell, just over 10 years ago, the Houston Alexander hype train was roaring.