Is retopologizing a regular step in modeling s…

Is retopologizing a regular step in modeling something for animation?

Yes, otherwise the rigger/animator/game engine is gonna have a bad time.

Even if I have no plans to animate or rig anything I still retopo most things, but usually with the help of automation. Overall I think retopo will be the first things to be fully automated in the future, already the softwares are getting insanely smart.