A chainsaw in the right hands can be a precision instrument; much better than a more directed/restricted saw. Definitely not typical for most carpentry work, but a sufficiently skilled craftsman can get through cuts a lot quicker with a chainsaw than a "safer" alternative. (Note: this is only true for very skilled/experienced people. Don't try it at home, those are professionals, etc, etc). I once worked at a construction site with a guy who would use a chainsaw to cut molding and trim. He would measure one time, and then make ornate cuts that looked amazing, and he would do it so quickly that it seemed like a magic trick.

If you ever want to have your mind blown (in a good way), visit Fairbanks or similar arctic locations in the winter and go to an ice carving festival. You'll see people there making incredibly detailed cuts with chainsaws. Ice is more forgiving than wood, but still far above the level of most mere mortals.

Meanwhile I feel good about my chainsaw work if I don't knock the chain off.

Enery compared to what? many crews are running a generator all day which is less efficient as it is running even when the says are not, while the chainsaw shuts off between cuts.

of course battery works well today. Other sites now have grid power.