So long as browsers allow you to open the developer tools and inspect memory etc., they're more open than remote attestation of a stock android or ios device
Decompiling apps only works if you can get the app. I don't understand GP's problem with the apk format either, but you do need to break terms of service to get the files if you don't have a phone with Google services installed. Whether that's ethical or legal is up for debate
So long as browsers allow you to open the developer tools and inspect memory etc., they're more open than remote attestation of a stock android or ios device
Decompiling apps only works if you can get the app. I don't understand GP's problem with the apk format either, but you do need to break terms of service to get the files if you don't have a phone with Google services installed. Whether that's ethical or legal is up for debate