It's how it works, a post gets made about Destiny and people complain about vaulted content. People who actually play the game have gotten over it.
I mean I do get both sides on this, I'm Mr Destiny on ERA.. I used to do all the OT's and I've put more time in to this game both in game and in the community that is realistically healthy for a "hobby"
DCV absolutely sucked a lot of people got a lot of content they paid money for removed, Players for the most part have moved on but people straight up dropped the game because of it to and rightly so.
From Bungies perspective they issued some much needed engine upgrades and only had limited resources to keep all that content working as intended. The content was getting ridiculously low engagement rates and accounting for significant file sizes and bug testing and it wasn't relevant to the "live game" at all as players had long since power crept out of it's ranges.
We lost a lot of stuff I wish we hadn't, Strike, PvP and Gambit playlists got absolutely slashed of content and they still feel those side effects today. The amount of content rotated out of the vault (which was one of their core tenants, content cycling in and out) has been frankly very poor to.
It's unlikely it's ever coming back, there's too much stuff in the vault now to bring back out for even a dedicated team. It would require a significant time and money investment for bungie to restore that content and most of it would see absolutely tiny engagement metrics again and could more than double the games install size to 200GB+
Thankfully/Sadly we can just look forward now and Bungie have commited to never doing that kind of thing again.
I don't blame people for being bitter but I do wish we didn't have to derail any discussion of the game with it