Even among the shoujo ai supporters, you are literally the only one in this thread who has gone for the porn angle so unless you want to edit your post with a giant "IMO", "always" is a teensy bit of an overstatement.
which part of my post that saying I am a shoujo ai supporters, read my statements again.
also, it's porn, it's not my opinion, it is what it is,
https://en.wiktionary.org/wiki/shoujo_ai
In North America, yuri has initially been used to denote only the most explicit end of the spectrum, that which depicts sexual relationships and sex scenes, and as such deemed primarily as a variety of hentai.
( you cite the same sentence
less than 20 hours ago albeit from yuri entry on wikipedia)
https://yurimother.com/post/185438570644/yurivsshoujoai
The American audience that created “shoujo-ai” pushed for its use to describe non-sexual works featuring lesbian relationships and for “Yuri” to be used only to describe pornography.
http://www.yuricon.com/what-is-yuricon/#whatisyuri
Here in the west, as anime and manga fandom grew quickly in the 1990s, the term Yuri was often, but not exclusively, used to represent explicit stories with sexual relations between women. In short, it was considered “porn for guys.”
you even said it yourself on
your first post.
Yuri is a wide genre of everything girl's love related, not just the explicit stuff
what explicit stuff if not porn/hentai? stop associate smut = porn, that muddle things up.
And assuming your definition of "sismance" is the equivalent of what we in the 21st century call "subtext" (ie. pretty damn gay, but not explicitly stated f/f romance), then that stuff typically doesn't get the shoujo ai tag anyway unless they're really gay about it (eg. Yuyushiki is probably the gayest thing you can read on the site that currently doesn't have a shoujo ai tag).
don't kid yourself,
Marimite is tagged shoujo ai everywhere, that series is literally what brings yuri back to mainstream in the modern era, yet still subtext. also, that thing is so 'ancient' and wasn't even called yuri back then, but Class S - a terms so outdated which I believe many people don't even know what that is.
if you call yuyushiki as shoujo ai, then almost every cgdct series are going to be shoujo ai :/ tone down your yuri googles a little.