Yes, basically.
It was suggested that when real stars is on, the other options would be greyed out, but that hasn't happened as of yet.
It's not really a priority.
I'd recommend going for no higher than 90%, just as it drastically reduces the change of gettign stuck.
And set the minimum number of jump points to atleast 5 in your starting system, that also helps, unless you want to play it risky.