The midi is an exact transcription of the notation printed in 1821. If you don't like it, that may be because you have only heard modern arrangements, in which the tune has been slowed down a lot and altered in various other ways. The modern form is well known and did not require transcription; though I suppose it might be a useful exercise at some point, as an illustration of the way in which Revival performers have frequently re-invented (and sometimes mis-represented) their sources.

Once you learn a bit more about the subject, you'll understand that point.