Still, works very well for the song. The sound is unimpressive when isolated, but so are so many of the Beatles bass tracks, and it's just what the song / arrangement needs.
Isolated tracks almost always sound weird!
There are tons on YouTube, many ripped from Rock Band games. I love listening to them, but it's funny how surprising they can be.
For example, this sounds way sloppier than I would have guessed. Does it matter in context? No!
Or this. Bizarre tone, some of the chords are totally different than you might expect, but it works in context.