Continuous sparging (a.k.a. fly sparging) is also pretty simple once one has one's system dialed in. It also takes less physical effort than batch sparging or BIAB.
I'm not trying to disagree with everything you say, but my experience is that batch sparging takes far less effort than when I fly sparged.
+1 When I started brewing a few years ago, Denny provided me with one of the best piece of guidance Ive received to date- not only is batch sparge efficient, its as effective as it is easy. good wort PH for mash really minimizes or removes worry of extracting tannins in the sparge. I will add 180-185 F batch sparge water and have never had any PH issue or tannin issue. put all that together with mid 80's efficiency and Im happy i started the batch sparge process.