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Do they actually do any user testing before launching a feature? Or did someone important at YouTube think it was a cool idea and greenlighted it.

How about doing a poll before a video asking people if they like the feature? If they answer no then ask if they'd like it turned off? Beats moving on to the next new feature.

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I know for a fact that they do a bunch of A/B testing at a time. The metrics they measure to decide if the change was effective isn't transparent. I wish there was a straightforward way but I imagine the "Send feedback" in the sidebar includes a way for them to see what experiments are active on your account.

They must be in discord of what they are measuring vs. what their vocal audience is. Their vocal audience is probably there to browse around and engage amongst themselves, while they are measuring retention and content engagement. Those user stories are not so subtly different.

Did they write the headings of the report backwards maybe?

Blame TikTok?

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