The Dreamliner has been flawed for years, The FAA - along with the whole world - knows that.
https://en.wikipedia.org/wiki/Boeing_787_Dreamliner#Accidents_and_incidents
Don’t have any recent viability on the 787 program but I have two observations.
First, the composite technology used on the 87 is extensive and very sophisticated and complicated. If done right , it’s awesome, if there are problems they can be very problematic.
Second, there is always some malcontent people in any program who make assertions that are negative to a project. They often are completely wrong opinions and they usually have a second agenda on their accusations.
Your link shows seven accidents with no hull losses across over 1100 aircraft since the 787 started service. That is 0.6% of all 787s in service. This accident rate is hardly evidence of “flawed for years.”