But...I...I don't wanna DPS, I'm a healer...

[Anova]

Is the end game really only about having an extra DPS who occasionally keeps people alive?

It depends on who you're asking. If a player used to farming A4S and are decked out in close to i210 gear, and an entire light party with people in that same level of gear and playstyle; their tank will probably not be dying to anything in Fractal (because the supercharged dps is killing everything the moment it spawns). So, everyone will be spending more time dpsing than healing/tanking in those kinds of games. If a team in slightly less stellar Yasha gear runs Fractal, they may spend more time on mechanics and their party role.

CS is great and it adds a lot of depth to the healer meta. It's just that certain players get hung up that the way pros play on stream as the way everyone should play it. Keep in mind, these are the same players who let the tank drop to 1HP (or as low as it can) before healing back up. Some do it because they can get away with it and it maximizes dps, but a good portion of it is also showboating. People like to watch people skirt that edge between disaster and victory.

BTW, this is a bit of amusing trivia about not needing healers. Nobody can do a dungeon past level 32 without a full dedicated healer role. Prior to that, you can get away with an arcanist as a healer if you really want to. If anything, healers and tanks become more necessary as you level. The problem happens when you do it unsynced or with higher level items than intended (which is what happens at endgame). Once everyone is overgeared, party roles break down. Just look at the Warriors who solo Titan EX or the Scholars who solo HM dungeons.