With photoperiod plants I would never recommend trying to intentionally stretch a plant out. I just don't see a reason to do it. If you properly trim/lolipop your plant, you shouldn't have any problems. Some strains do have a very dense, crowded type of structure. Maybe I can see that being a time to do it but even then I think it can be controlled from proper maintenance.
I don't know if this translates to auto flowers though. Seems to be a lot of inconsistency with autoflower strains in general. All the more reason to buy seeds from known autoflower breeders.