The OP might not be the most eloquent, but I agree with their point. Staggering the content out has some negative effects.

Firstly, it makes each individual patch less exciting. When patch 2.1 dropped it introduced player housing, PvP, 24 man raids. extreme primals (Not one, but FIVE), Hildabrand, two dungeons, two beast tribes, treasure maps, and the aesthetician. It was like a mini-expansion all on its own. It was incredibly fun to log in and barely be able to even sample all of the stuff in a day. Let alone experience all the depth they had to offer. That kid-in-a-candy-store feeling is gone now. Patch 4.5 will have ONE new dungeon, a 24 man raid, one new trial/extreme, one new custom delivery client, and a board game. That's it. I'll have that knocked out in a couple of hours. The excitement for patch day is now only because of new MSQ for me.

Second, lets say you're someone that is mostly excited about one particular piece of content: like Blue Mage or Eureka. Now instead of getting your most anticipated content on patch day you instead have to wait for sometimes weeks, while other players are getting their most anticipated item right away. I'd rather we just get all of the patch's content at once and be able to play them in whatever order we wish instead of getting that order dictated for us.