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While not exactly a fix for your case, Firefox on android has a prompt for opening sites in their apps if it's installed on your device. Match that with its extension support and it makes most of the mobile web far less obnoxious.

Well, to be fair, if the button would be there, there would be another HN user complaining about the nagging to install the app even when I'm logged in!.

You can turn it off.

The hamburger menu on the top right. That>settings>Ask to open in App.

If you clear cookies, you have to do it again.