I doubt this is "Apple doesn’t want you developing hobby apps", so much as "Apple doesn’t want dev accounts to be an easy backdoor for sideloading apps" and hobby apps are an acceptable casualty.
The casual use of the word "sideloading" is dangerous to society. It is literal newspeak with the intent to eliminate even the idea of "installing" and make it so people cannot even think of applications outside of a corporation (or institution's) walled garden. Users installing applications is the default. Walled gardens are the weird dangerous thing.
Video games seem to be an outlier, as the enormous size of most games means it can't be streamed well just yet.