It appears that all the doom about mare was pushed by people who don't even know what mare does.
They think Mare = Dalamud. They think Square banned all mods and plugins. They think without Mare, people will not be able to good, etc.
No online game devs, and I mean it. NO ONLINE GAME DEVS, would in their right mind allow a P2P file transfer mod that can be easily explored to send malware, keyloggers and other harmful applications