>>4474103
It isn't that film sucks in shadows. You can just use higher iso film, or extend exposure. It is that film can struggle when resolving low contrast detail.
Sometimes the effect can be mitigated, but not always. On the opposite end of that film is great at resolving high contrast details and does not suffer from moire like digital.
Negative film has very high exposure latitude, so a good photographer can expose for shadows, maintain detail in as much of the shadow areas as they want, and still retain highlight detail.
Finally if we are being real you don't often need 100% detail in the shadow areas, and sometimes it looks better without.