So with this stance (ie. against "side-loading" - what a crappy term) not only you make things worse for everyone (not being able to use their own devices as they see fit) even though they wouldn't be visiting China, you also validate region locking (another shitty practice that has no place in a global internet and only serves whoever wants to divide people) including any tech necessary for it (and thus monetary incentives for whoever implements it) and not solve the issue at hand (people being forced to install malware) since it can be done just as easily through normal routes.
No, if you do not want such stuff then speak against it and do not put yourself in a position to be affected by it (do not visit China, use burner phones, whatever).