zogt_besser-
That’s not fare! It is simply wrong to take the Aruch HaShulchan completely out of context!
You quote only part of the last line of the three paragraphs. I will judge you favorably. I will assume somebody showed you just that paragraph, without showing you the paragraph preceding this one.
In the previous paragraph, the Aruch HaShulchan speaks about how in his generation people have began to be ????? ?????? ????? ???? ???. He writes how the bathhouses used to be closed all nine days, including Erev Shabbos. He writes ??? ?? ???? ?????? ????? ??????? ???? ?? ????.
In the part you are quoting, he is speaking about somebody who soiled himself and needs to remove the dirt. He needs hot water to remove that dirt. He is not talking about somebody who feels yukky and needs a shower. Nobody permits hot water for that! The Aruch Hashulchan does not even permit showering for Shabbos!
Sorry, I did not read your “online” sorces, but all the contemporary Poskim quote the Aruch HaShulchan as being strict on this issue.