Incorrect.
There are 3 types of alliances.
1) Pre-made: Alliances whose members move over to a new world from an older world. These alliances are "pre-made". They are made on another server, and then go to a new server when it opens, or when their current server ends.
2) MRA: Leaders in these alliances start invite spamming as soon as they start. They send invitations to every player in sight. There is no method to their recruiting. Their goal is to recruit as many players as possible, and overwhelm other alliances with sheer numbers.
3) Basic: These alliances are created by a leader who moves over to a new world with either no allies from other worlds, or just a couple. They also do not recruit anyone though. They look for good players and talk to them about joining. They do not "mass recruit". They selectively recruit from the current world. Calling them an MRA simply because they did not move over to the current world with "pre-made" allies, shows a very narrow minded point of view.
Examples of these alliance types.
The Shadow Force, a basic alliance type, neither an MRA, nor a pre-made. We recruited carefully from this world, not mass recruiting, and not coming over with a pre-made group.
Enter The Dragon, a basic alliance type, neither an MRA, nor a pre-made. Some of their members are from another world, but most of them were carefully recruited from this world, not mass recruiting, and not coming over with a pre-made group.
Kos Elite, a pre-made alliance, almost all of their members came over from another world. They recruited a very small amount of players from this current world, most were from an old world.
DreadFleet, I do not know much about them, but from what I have heard they are a pre-made. Most of their players are from another server and moved over here together.
The Mayans, an MRA from what I can see. Obviously I can't say for certain because I am not in this alliance, but they have a very low point average and are on the top of the rankings. They quickly filled up to 50 members, not many of whome it seems have previous experience.
Spartan Warriors, another MRA, I do not believe they moved over as a group. They shot up the rankings due to recruiting as many players as possible, and have a very low point average.
Codex, I will stay away from them. TBH was most certainly an MRA, Legion X was an offshoot of that, trying to be more of a bacis alliance, only recruiting top players, but they fell. Now there is Codex, they are composed almost entirely of exTBH players, but their point average is pretty good. I have had personal disputes with their leaders, and am not sure how long they are going to be around. But after thinking about it, I don't think I would call them an MRA, nor a pre-made. They seem to be turning in to more of a basic alliance, recruiting more carefully.