Parking etiquette

There is a guy who parks his bike at a very shallow angle (like closer
to horizontal instead of the normal vertical to the kerb) it has a
cover on it and on the center stand.

Now being a nice guy I thought parking near to him would let more cars
use the available parking spaces, but is this an ok thing to do.
Somehow it feels like invading his/her personal space if I nudge up
close overnight.

 

It's not so bad as long as you don't use this in a ploy to dominate the
bed.

 

and Dutch Ovens are usually considered slightly rude.