Can someone give me an in-depth explanation why Summoner is arguably the worst DPS?

[Sunako]

That's actually also quite true. Summoner gets punished so hard for disconnecting or dying. You have to resummoner your pet with a predetermined MP poll. Basically doing awful (the most afwul of them all). You can argue that if a Summoner stays alive at least, he should push good numbers. What's the point of you're like the lowers of the 'pure' DPS and collapse even more when you makes a mistake in comparison to other classes?

Game should not be balanced by that how many mistake you do. Game should be balanced the way you do not do mistakes. And i think healers and tanks get even bigger punishment if they disconnect since that can wipe whole party.

[ViviAnimus]

Not dying is not a mistake and it is also sometimes not even in your own hands. Disconnect is mostly not in your hands, dying because of lack of healing is also not in your own hands. If you think healers and tanks should get punished for disconnecting, then you are just not thinking right. The raid is punished enough, probably by wiping in Final Coil. Why would you create different measurements in punishment for something you can't even control? That's just simply stupid, no?