When going through my PPL training (in R22's) touchdown auto's weren't on the lesson plan - but I had them demonstrated anyways by the CFI because I wanted to see. He was fine with that, although the school's owner didn't like it very much!
When getting my CPL(H) about 15 years ago, same thing - wasn't required to do any to the ground for the practical test but I was comfortable doing them. Again it was because I asked & did a bunch, this was in Bell 47's so they were very relaxed compared to the R22.
I can see the point of not requiring them on the practical test, but I'd still prefer to be trained in them personally.