That’s not historically uncommon though. Like the house I grew up in was a rural house built in ~1890 by the brothers who farmed the land. Of course it had the usual quirks of an old house, but it was well maintained over time and I wouldn’t view it as any kind of “monstrosity”.
I'm guessing it didn't have wiring or plumbing when it was originally built, though. If professional electricians/plumbers added those _after_ the fact, then that's still way different than trying to DIY everything in the 21st century.