The Kindle listing I was looking at shared details with the Video listing.
Despite a fair amount of news browsing, apparently I missed the information that the Video app had made its way into the Play store. Actually, I seem to recall some news of same but also follow-up news that it had been pulled, again, within a few days. (The eternal Google/Amazon competition/strife/"user, you are the product" situation.) This would have been months ago.
So, I'm left uncertain whether I'm looking at the real thing, or an imposter. I'm fairly certain I'm not. But "fairly certain" is not "secure".
At the time, I didn't have a lot of time to delve into this. And I only had my phone in hand, making such an investigation more cumbersome.
I didn't install the Kindle app, then. The moment and immediate need passed, and following up on this dropped down my list of priorities.
When I see an app has over 100 million installs, half a million 5 star reviews, and a support email address ending in @amazon.com it seems pretty sure to be the real deal.
After some more checking, when I had a bit of time, I installed it.
Those are also things I look for.
Still seems to be in line with my basic point: On Google Play, it's up to the user to assess the item's legitimacy. At least, so far, Google continues to provide these data points to the user; as long as the Play Store itself isn't compromised.
Keep in mind, some of the items recently in question in the news are reported to have had a million plus installs. Separately, fairly recent news stories have described ways in which third parties have managed to glom onto prominent domains -- particularly those providing extensive user services -- to gain the addressing of that major domain for their own functionality.
