Regarding s1s, I'm not convinced that recessive herm traits won't be passed on, only to appear in future generations down the line. So caution should always be taken when bagseed or s1 is in the lineage.This is why we tend to be cautious when dealing with chem, cookies, og, crosses. It's also why I take herm reports with a grain of salt most of the time.
Caveat: There is a big difference between a cut that will only herm when chemically induced vs one that will herm due to "natural" stressors.
With that being said, I never see much discussion around strains having herm tendencies until they become acclimated after several generations of selection in a new environment. It's something bodhi talked about in the potcast that makes a lot of sense when you think about a cannabis' natural will to survive generationally.
It's a little different with indoors because we should theoretically be able to dial in our indoor climates similarly, but when it comes to outdoor, taking a line that was bred for generations in a desert climate, and then trying to grow the resultant seeds in a climate that is the polar opposite can stress the plant out enough to herm until it gets used to the new climate after several generations.
Like heisen said though, I kill off anything that herms even slightly in my indoor setup. I'm not trying to acclimate unstable genes. Rather I am looking for those that can take a beating and still not herm. This approach makes the most sense to me to reduce herm tendencies in potential future generations. Not fool proof but makes the most sense to me.