So long as there are multiple gates in, with decent spacing, a determined raiding force will get in. Myself and many others proved this many times over.
The way things are now with detector bots, we stand little chance of roaming a defended island, and the raiding “pirate” game is very dead. That, imo, causes (edit-I should say is one of the causes) people to blob up, and is partially responsible for the situation we have.
What's your definition of blob?