Considering we've always been drip-fed content in this way all these years, no; not really.
Try thinking about the content we don't have yet that we will have before 7.0, and that might help a bit.
What's still to come before 7.0:
And this is probably the short list considering we really don't know everything they plan on patching in before 7.0
- The rest of Island Sanctuary - what we just got is the "introduction phase" - let that sink in for a minute.
- A new Deep Dungeon
- The two new dungeon systems
- Part3 of the current 8-man Raid
- Parts 2 & 3 of the current 24-man Alliance Raid
- Lvl 90 Relics + Story quests for said relic
- the 2nd and 3rd Beast Tribes for this expansion
- More Trial fights and their savage mounts
- The meta Trial savage mount quest
- New dungeons
If people want to look back on Endwalker and say they were disappointed, that's fine, but wouldn't it make sense to wait until ALL of Endwalkers' content is patched in before making that judgement? :O