Who said I was? Nowhere in my response did I even insinuate my sole motivation for remaining subscribed was simply to complain on the OF. In fact, this assumption gets thrown away a bit too liberally as a rebuttal. People can still enjoy aspects of the game while being critical. Speaking for myself now, I still enjoy raiding enough to have two separate characters; three if you include my split clear character. Ironically, it's everyone's favourite website that gives Savage longevity but that's where I find my fun. Which isn't to say I don't enjoy other content like crafting, mount farming and whatnot. I dabbled or actively play just about every piece of content. The problem is there still isn't nearly enough with any longevity. Once again, a third party website gives raiding more relevance than SE does. Now if Criterion had better rewards, you could argue that helps. Alas, it doesn't.
Good for you? A good many don't. Hence the backlash. The difference is in the hypothetical scenario where you still get Hildibrand but the relic has actual depth to its progression both subs of players get something to do instead of just you.
While yes, they look at other outlets for feedback and opinions, the forums is their primary go to. Yoshida outright says as much; asking players to comment on the OF whenever they have concerns or feedback. That doesn't mean they're combing through each and every post nor did I assert as much anywhere in my response. They certainly aren't scouring through reddit or fan made websites. Outside of these forums, they'll occasionally listen to influencers who often share similar opinions to what's being echoed here. How do we know this? Look at nearly any major source of contention amongst the playerbase and when it was either acknowledged or solved.
Healer complaints were ablaze for years yet only when a near 300 liked thread was made on the OF did it get acknowledged in the actual Q&A. Only for Yoshida to dismissively say, "Go play Ultimate" after the question was poorly translated. They actually had the nerve to say they weren't getting enough feedback on ping issues regarding Hypercharge and Blood Weapon to feel it was a concern despite damn near hundreds of threads, comments and YouTube videos bemoaning how awful both skills were since Shadowbringers. Funny enough, when both NA and JP players flooded the Q&A thread criticising both abilities, they walked that statement back. Machinist still had to wait a whole two patches but their constant complaining on this forum is what got them noticed.
And those are just two examples from this expansion alone where they outright admitted to not knowing issues players had (or straight up not acknowledging them) until they were brought to the forums. There's a reason Sfia made a thread about Endgame gearing here rather then post on reddit or make a video despite being a streamer. That very conversation has been had several times pretty much everywhere. It's widely been a hot button topic that gear progression takes forever in this game. It's gone completely unacknowledged so he came to the forums... just Yoshida says to do with feedback. Now whether they ever listen to the criticism on loot is another matter entirely but they certainly weren't going to notice on Reddit.