Not true, thanks to the searchable block we now have via the main menu I can impose it on people I've never instanced with.
That has nothing to do with anything I said.
I doubt there are many players trying to abuse it by for example blocking someone's wing mates so they can be isolated for attack, since the friends list overrides block it just wouldn't work.
I don't have and do not want the entire game on my friends list. I want a fair shot at encountering anyone who is in the same in-game location as my commander, without your biases being imposed upon me.
Not every potential ally or good samaritan is going to be on a target's friend's list, so blocking likely help is a tactic that is used to isolate prey.
That isn't true Morbad we've over this numerous times.
And you're still demonstrably wrong.
If I block you it changes my instancing not yours. I'm the one who ends up in the separate instance. It has no effect on you. I'm the one who ends up in the separate instance. It has no effect on you.
Block does not create a new instance just for you on the spot, it weighs against future instancing attempts.
If my CMDR happens to be in an instance with yours while you block someone else, and we don't reinstance, but they do, they are excluded from the instance I share with you...which is also my instance.
If I have been instanced with you more recently (which adds weight to future instancing) and and both you and the CMDR you've blocked are both in their own instances at the same in-game location, I am more likely to be instanced with you again if there are multiple instances in the same area and my CMDR tries to enter one.
In these and other cases, your block would influence who I encounter. The only way for that not to be possible, or likely, is for us to never be in a position to encounter each other at the same time someone you have blocked is in the area.
If you want to see this demonstrated in game, this would not be hard to arrange.