I think it is a better safe than sorry approch, maybe all would be fine and the only issue is a degraded engine life, but they do cost a lot of money to replace.
on the other hand if just 1 plane falls out of the sky due this, that would be a disaster knowing we had the information to hand to stop this
my view is stay grounded until were 100% sure, this is why we have checks on top of checks and backup systems and all the safty nets we can to avoid the swiss cheese.
Maybe I should re-train as a bus driver! same job just sat 4 feet off the ground rather than 38,000.