The Google Maps thing isn’t entirely about screen size (though I would hope it wouldn’t be quite so bad on larger screens—but I’m only familiar with how it looks on a small-by-modern-standards Android phone, where it’s about the same as on the iPhone depicted in this article, or even a little less); it’s about the product’s overarching philosophy, which has changed over the past decade (in a direction I strongly dislike). It used to be about, y’know,
maps, but maps are now incidental, a means to a
different end, ably demonstrated by their icon change a year ago from a map to a location pin. It’s all about the destinations now, and mapping has progressively deteriorated and been deemphasised.
At least in the case depicted, you should be able to get it to show just the map by tapping once in the map area.
(If you’re interested in more about this, https://www.justinobeirne.com has some excellent long-form content analysing all the major maps products, how they’ve changed over time, &c. https://www.justinobeirne.com/google-maps-new-app-icon and https://www.justinobeirne.com/what-happened-to-google-maps are good brief starting points.)