so right:
the kedushas shoshanim was brought to demonstrate that one is not allowed to look at ones wife while undressed. Irrelevant to what I am discussing.
Rav Moshe Feinstien was qualified to extend lo sikrivu to relevant cases. That is quite different from random YWN coffee room members applying it at will.
My reference to touching was in response to people who thought that if swimming together was lo sikrivu, it would be assur for a father and daughter after a certain age, similar to sleeping together. I demonstrated that not every case of lo sikrivu has the same rules. So the comparison is on.
I still contend: baal tosif; a REAL issur d’oraisah