Meanwhile avoidance of large storms by a wide margin would be a prudent safety action.
unfortunately this is often subjectively interpreted.
Above the storm has been interpreted as good-enough yet is that not a greater risk to pitot, engines etc.?
And then we have the descent through heavy rain?
Somewhere the FCOM etc. needs to be standardized in this respect so at least we know after the fact what side of the judgement curve (man or machine) needs to be looked at.