"As you might expect, developers love this new feature—anything that can provide them with more information regarding how users are interacting with their apps is a positive." Here I am deliberately designing apps that track no user interaction data at all. Maybe that's why Google doesn't even list my app even though it's one of the longest running "web apps" alive and used to be listed #1 when it first came out. Now…
Is your hypothesis that Google would have some incentive that you collect user interaction data? Why would that be?
> used to be listed #1 when it first came out
Back in 2002. A lot has happened since then. Your app [1] is not comparable to what competitors like Zoho offer. There's plenty of potential reasons for not being ranked higher: from the landing page, to the increase in SaaS competition, to not keeping up with UX trends etc.