Perhaps "men behaving badly" is more or less a nasty constant ratio, and we are now much more aware because more and more women have the courage to report it. We had quite senior gropers in the Met Office, but only famous when all participants/ spouses had retired. The wives / daughters dealt with them at the time by pinching and avoidance, and did not tell their men in case [as was likely]. there was bloodshed. It is only in retirement that I heard all the stories.
The big improvement in sanctions has been helped by the ME TOO movement.
9 months inside is totally inadequate, because one purpose of prison is deterrence. He should have been awarded an exemplary maximum.