Their comment wasn't directed towards improving the ratio. They were suggesting that the focus should instead be on the current users. I imagine this is a result of everything being so new, they think it makes sense to take some time and figure out why people are actually using the app before trying to tackle more directed problems like the uninstall ratio.
In that context, it's really not a survivorship bias. If you want to know about the survivors, it's not wrong to consider the surviors only.
Right... and then they got a response that they might want to ask a different question along with a suggestion of how to answer it.
Now you are trying to treat that solution that is explicitly meant to answer the new question as if it were an answer for the original question, going so far as to apply logic issues from the old onto the new.
Discussions, particularly ones of this nature, change and shift direction. It doesn't mean that later topics inherit logical traits or something from earlier ones.
Agreed. If a minority of people like the app and you want to appeal to the majority, don't ask the minority what they want because those might be reasons the majority don't care about/dislike.
In that context, it's really not a survivorship bias. If you want to know about the survivors, it's not wrong to consider the surviors only.