as Fletch said, Ingo's site is not exclusively about guitars.
Of course, many articles are technical, but there is also a lot of anecdotes about DS/MK history, a lot of understanding music in general, and Mark's one in particular.
It's a blog, it's a databse. You can pick what you want, you do'nt have to read it all. Many articles can interest non-guitarists and even non-musicans people.
LE, I understand you can find his site too much "technical", but don't get it wrong, it contains a lot of very useful infomations, and many many many ones that are regularly asked here or on Guy's forum.
I remember you were surprised about the Grestch used on In the sky, but it's the kind of info that you can immediately find on Ingo's site, like many other informations.
I am always surprised that many fans ask questions (what guitar, what song, which year, which version, which album, etc...) that are already answered since many years on his site.
it's a little bit a waste of time imho