I was going a different route. You've only policed the topic in a specific direction (that I've seen).
You're not obligated (and it would look Quixotic) to police every comment. But you sure took on a handful.
I haven't seen that the mods care. I've seen that you do as do some others, but what I see is discussion branching from different elements of the original submission. Like what happens on threaded discussion boards.
Lemmy is for discussion, those will sometimes wind around in a stream of (group) consciousness way. I understand some optics issues with bringing up the app, but it was in the original submission. People on both "sides" took the mention of the app and commented completely divorced from the state aim of the post. While those that mentioned the app and were on topic - those you policed.
If the mods care to force narrow conversation, that's up to them.