You mean installing apps via your less-safe computer? Browsers used to allow any software to side-load extensions and you know how that went: They all moved to

You mean installing apps via your less-safe computer? Browsers used to allow any software to side-load extensions and you know how that went: They all moved to store-only installs because all kinds of software were able to affect the browsers. Same way for side-loading apps to your phone. Sure it’s more difficult than just tapping something on the web, but it doesn’t mean it’s safe for the end user.