At this point will FFXIV collapse if all mods and third party tools disappear?

[Xlantaa]

I don't think so. People who use mods is a very small percentage of player base despite what people in this forums says. Even the people who uses it will shrug and continue playing without them. You also should count the people who plays on consoles, which cannot use mods even if they want. I would say only very small mount will actually quit if they can't mod.