I don't see that being likely. They said they want people to be able to enjoy FFXIV solo or with friends. But they never said anything about removing the aspect of being online with others and being able to interact if you choose. Plus that would close off the possibility for someone to engage with the online group content. I fully got the impression they still wanted to retain the MMO aspect, but not scare off people who had certain ideas about what an MMO is and what it requires. The subscription will still turn off some of those people, but given that subscriptions are something that's entered the mainstream a bit more with things like streaming services or game pass platforms I could see that being more palatable to fans of the single player games if they didn't have to fear the MMO shadow of being forced to interact with others in the world.