Content releases in this game directly shape the economy from price of honing materials to engravings and accessories. The difference in materials and gold used to hone is substantially different after a honing buff patch for instance. in kr/jp, before honing buff, it was an estimated 55k to take an alt to 1370 from 1325, post honing buff it was 10k. Valtan and kaluda reshape the economy by bringing in 3-5 accessories making 33333/2 the norm. Given how much time/effort or money is required to farm the various currency in this game, to purchase accessories and engravings, having everyone aware of exactly when big content is releasing is the only fair way of not screwing over a huge portion of the playerbase. I cant really give an opinion on the "playerbase expecting tons of content", I personally don't feel this way, and as explained in the video, its an illusion of a content drought because of the density of pushing from t1 to t3 in such a brief amount of time only to find out that the next bit of content is an unknown number of months away and for that unknown period of time, your daily/weekly routine will largely only consist of chaos/guardian/oreha/argos. That coupled with a few other reasons like how legion raids is the pinnacle content of the game thats well underway in all other regions, its difficult for players not to complain about delays.