Sideloading is a more specific term than just “installing”, it’s more about where you got the software, the process of installing it. So people started using a more specific term to distinguish it from other types of installing.
Why people choose to adopt one word or another, I dunno. We just started calling it sideloading and that’s been the term for as long as I remember (though very early on I didn’t read or write much in English)
Sideloading is a more specific term than just “installing”, it’s more about where you got the software, the process of installing it. So people started using a more specific term to distinguish it from other types of installing.
Why people choose to adopt one word or another, I dunno. We just started calling it sideloading and that’s been the term for as long as I remember (though very early on I didn’t read or write much in English)