Sorry, but you have no idea what you are talking about. First of all, there are at least two Henle editions (Wallner, 1952, 1980) and (Gertsch, not sure about the date) of the Beethoven sonatas.
Both Henle editions, although lovely in their type set, are plagued with textual errors (the Gertsch marginally better than the first, in my opinion). For example, should you blindly buy into the urtext myth, as far as I can tell you would end up playing accents on the wrong notes in 109, wrong notes in the recitative in 31.2 and totally missing the voice leading in Op. 13.
Check this out, for example:
https://www.tecla.com/extras/1001/1001/1001note.htm
Schenker's is very good.
You could be a little nicer about it. Anyways, I distrust when people quote "original editions" because those are not manuscripts, and have a great deal of editing in them themselves. Original editions are also plagued with errors. Although this guy makes an itneresting point about Pathetique, look at the end of bar two: the B and C in the tenor voice aren't placed on the lower stave, so actually Henle is more consistent. Perhaps it would be better if both times the tenor voice were on the lower stave, but obviously neither one of them did this.
In his opus 27 example, he says vaguely, "the interpretation could be different." That's true: instead of tie'ing the B-flat, someone might play it twice, reading the "original edition." Henle actually clarifies the issue by putting the slur over the two moving notes, and the whole duration of the B-flat.
In bar 7, you will notice the long slur in the "original edition" contains the second B_flat, tied to the first. Sorry I know this is confusing. But basically, the original edition is saying, you slur from the A to the B-flat, the B-flat is tied, and the slur continues - it doesn't start over from the next note after the B-flat. Actually, Henle clarifies this issue as well by turning it into one slur. He always says, "this could affect the interpretation," but leaves unanswered the obvious: "how?"
He says he would rather have only markings from "original editions" than modern ones like Urtext, totally neglecting the possibility, and sometimes fact, that original editions were incorrect, and had to be turned into second editions to correct the multitude of errors. This is another example of romanticizing the past, and rejecting with hatred the world that you live in. Beethoven scholarship has only improved since the original times of printing these works; let us not neglect it.
Walter Ramsey