How close is to close to troll up and start fishing next to another boat?

Let me set the scene for you. There was one boat that was leaving out from the boat ramp as me and buddy were putting my boat in.

I watched them to see where they were going(keep in mind this is just before daylight). They were going the direction I had planned to fish as well. So we creep out from the dock. We found the boat that had just left the dock.

So we went on passed them three or four boathouses 100 yd or so. We start fishing 30 min or so a here they come passed us. So we continue fishing. We hear another boat coming toward us. And wouldn't you knowit same boat from the ramp. They trolled up and started fishing same boathouse as us and even fished the front as we were fishing the side of the it. Close enough I could have casted and hit his boat with no problem.

So my question is. Is it me or was this just a little inconsiderate? I personally will just move on around someone let them fish the spot and try to find fish else where. Sorry for the long post this just rubbed me the wrong way yesterday. So I wanted to put it out there and see what y'alls thoughts were. Thank you