The Flash was one of the most anticipated movies in the DC Extended Universe, as well as one of the most controversial. For a number of reasons, the movie ultimately disappointed in just as many ways. Thus, some are skeptical as to how the Scarlet Speedster will be implemented in the upcoming DC Universe reboot, though most hope that it's a different Fastest Man Alive under the cowl.
Source:https://www.cbr.com/the-flash-born-to-run-dcu-barry-allen-wally-west/