I don't think being a health food is Beyond Meat's (or Impossible's) goal and it really shouldn't be.

I think they're trying to get the experience of eating meat right, they don't care (much) about the health profile. I think that's the right approach for them.

Some others are trying to grow actual meat (Memphis Meats), in that case you'd get the same nutritional profile without the suffering if they can pull it off.