How Nitty? Parking situation w/diagram

[Los Feliz Slim]

Some new people moved into the fourplex across the street from my house. Their garage is immediately across from my driveway. They've been parking one car in their garage, and putting their other car directly in front of their garage (which obviously isn't a legal parking space). It makes it incredibly difficult to back out of my driveway, especially for my wife in her SUV. In fact, the previous neighbor used to park there until my wife smashed into his car (which of course I paid for, because being parked illegally doesn't absolve us from the damage to his car). There is always legal street parking within 50 yards of the building. Here's a diagram:



How nitty is it to ask that they stop parking in front of their own garage? I really don't want to be a dick about it, but I also don't want to pay another $500 when my wife inevitably hits their car. There's a reason they put these things directly across from one another.

I'm correct to talk to them/leave a note about this, right?