I just checked that whole reply thread and I could be wrong but I don't think that guy at any moment compared M+ to FF dungeons or implied FF is better. I think he's just saying he doesn't like M+ and finds it dull, and that it encourages bad dungeon design. I really agree, would rather get more new and difficult dungeons being added with patches than just having to grind the same ones for two years with randomized effects and increased numbers. FFXIV has nothing to do with that opinion.