Sometimes I feel like I’m in a catch-22 replying to you.
I agree that arguing any and all points looks biased and slows things down. I can see how I might come off as biased.
In this case, I could have just made an assumption that YT is great at manipulating search to reflect one’s bubble. That doesn’t line up with my experience but probably would have progressed the conversation more in the direction you were going. My experience is that YT search is bad and my impression is that YT doesn’t put much effort into it. There are lots of (relatively) easy things they could do to improve it but don’t. Some parts of search are just entirely broken (like the ‘watched’ filter is entirely broken for me; it’s just permanently empty).
But also, if I avoid making assumptions and answer more honestly then I get a criticism like coming off as biased and arguing bad points.
One thing I note is that if I expand on closed answers, that seems to distract the conversation. So I could just answer yes/no/unsure instead. But I don’t think that would necessarily help much if there’s a disagreement. Maybe I’m wrong about that, though, and overall it would mean a quicker and more on-topic discussion.