...That is often abused https://in.mashable.com/tech/12219/tiktok-and-other-popular-...
You mentioned
> PWAs are more private and don't have access to things that could contain sensitive information like the clipboard's contents
Do PWAs -- Web applications built with JavaScript, among other Web technologies -- have access to standard Web API offering? If so, then PWAs offer no advantage with respect to your claim. How does using a PWA provide a more secure environment for the user?