Are you suggesting that morality can only be a result of religion?
No, not at all. Only that any moral system will be designed in the realm of ideas. That doesn't make it bad necessarily, but is that spirituality?Morality wasn't
designed, it
evolved. Ideas (memes) can offer 'designs' up for natural selection and that can supplement selection of genetic traits for morality but the basis for moral behavior across the animal kingdom is without doubt genetic. Before corruption of the word meme by social media, it had quite a different meaning and gave rise to the academic discipline of memetics - https://en.m.wikipedia.org/wiki/Meme.
Don't be hung up on 'spiritual'. It was a label I used to help people who need to have labels. Much like colors on a color chart, it has many shades which I attempted to clarify in the OP and other posts which may not have been read.