What it boils down to with warrior and summoner isn’t that the average player feels that their job design is interesting or engaging, because the average player is not playing FFXIV for the combat system, and that’s the key distinguishing factor. Most people are here for the story and the aesthetic. Warrior and summoner just happen to be the paths of least resistance to experience those. It also helps that both are level 1 jobs. You don’t need to learn anything new at a later level like with red mage or dancer.
I just don’t think that’s a compelling argument for restricting jobs to that level. Because the average player doesn’t need a hyper simplistic job to get through all the core content of FFXIV. That same group of players had little difficulty getting through Heavensward core content despite jobs being a lot more technical. That’s why we should be seeking a happy medium where each job offers something to the players that are looking to engage with the game’s combat system at its level while still making it easy for the person not interested in the combat system to still cruise through core content smoothly. You know, what we had before Shadowbringers anyway.