This is really what led me to soto, I don’t buy into the ritual, the chanting (unless it’s at a sessin, and even then only for the bonding experience) and the codes and so on of a lot of the other sects. Soto to me is a very pure expression, I’m also not a big fan of the Sotoshu (my teacher calls them the “funeral directors association”) and the more established Soto schools like the SF Zen Center.
Soto, as I understand it, is all about just shikantaza. The rest is optional. I don’t shave my head and wear robes, I just sit.
It took me a while, but this shoe fits. I read Dogen and he seems to agree with this for the most part, but of course ymmv.