I wouldn't call it awkward - it's more like mundane. PDFs feel like a work tool, akin to emails, Google searches, and Excel spreadsheets. Having to read a PDF for a game feels too similar to troubleshooting.
Well it's a combination of 'you're damned if you do, you're damned if you don't'. If I did include the instructions in the game information someone would complain it's too long. So I defer to trying to give the user the experience of playing an old fashion computer game in a package. If I had the chance and money maybe someday I can do a production of a boxset you could buy. But for right now I can only just give the visual feel.