Yes, the expectations were missed...however, there are reasons listed in the article that make sense...i.e. supply chain bottlenecks that haven't cleared yet, thus impeding economic progress. Case in point...I ordered some golf equipment from my pro shop a month or so ago...checked last week on delivery estimate and was told it's now "November"!?.
This economic roller coaster we're on is IMHO all about COVID...and with the Delta variant...poor vaccination 'compliance', etc...we're not moving ahead as fast as we could or should...just another reason for everyone to get their shots...it's in everyone's self interest.
One other observation...complaining about 6.5% GDP growth vs. 8.6% looks a little like booing a hitter for coming out of a slump with only a .378 avg. instead of .500...;-).
Edit: Typing "Gremlins" (can anything be done about uncontrolled cursor movements?)...is everyone having that problem, or just me and my setup?
Link: https://www.businessinsider.com/us-gdp-q2-economic-output-complete-recovery-vaccination-reopening-infrastructure-2021-7