I’d say it largely dependent upon which athlete and which program. Maybe some are spending too much time in the weight room relative to the amount and quality of track work, some need to spend more time in the weight room but I’d say the majority need to be sure they are spending more productive time in the weight room. That is some are lifting but in viewing the programs I believe many here would question if the athletes are truly deriving general strength/power benefits from their weight sessions.
Certainly, when in doubt the sprinter/hurdler needs make sure the track work is in order since that should be the priority. Still, poor strength/power levels that could, be at least, partially remedied in the weight room might be a limitation in their track performances.