Two women/girls in our tower were encouraged to ring the Tenor (15 1/2 cwt) and made a habit of it (though neither progressed to turning it in - yet).  In both cases it was early in their ringing career.  One started at 14 and the other in her mid 30s.  Both did a couple of years as Steeple Keeper (but neither were engineers).

But those are the exceptions. Our band is around 50/50 M/F but hardly any of the women normally venture beyond the 6th (10cwt) for Rounds and less for methods, even if encouraged to do so. I suspect that women (and men) who become established ringers without
learning to ring heavy bells feel inhibited because they know they don't have the skill, and they never get the skill because they never do it.

I suspect that more opportunities (and removing barriers) would have limited effect with established women ringers. A potentially bigger gain would come from inspiring new ringers to see the ability to ring heavy bells as a natural part of becoming an all round ringer. Most of the above applies to conducting as well. Strength isn’t relevant (though voice power is) but I think the same loop of sticking to what you
have done and avoiding what you have not also applies.