>If you choose to make your app eligible for auto install, Play can deliver your app to users’ devices automatically on launch day (if they’ve opted in).

It's up to the users.

And you need to still do quite a lot of leg work getting users to opt in. With the recent death of the Reddit API my favored client is being adapted to Lemmy - but the news of that happening only reached me because I was following the news on their subreddit before the shutoff. Pre-registration feels like a huge waste unless your users are literally chomping at the bit.

Users install a whole bunch of apps on their phone when looking for a solution to a problem and a fair few of those are never actually launched.

"Would you like to install this meal prep app in a couple of months time?" is a question I cannot imagine anyone saying yes to. Why would you? There are apps available today...