I wish Firefox provided two intents (does Android still call it that?), one for normal browsing and one for private browsing. Then any app that opens a link doesn't automatically get your active cookies from your main browser if you don't want it to.

Settings > Private browsing (under Privacy and security) > Open links in a private tab

An alternative is to use Firefox Focus (Firefox Klar on F-Droid) as your default browser, then its "open in" feature if you want to make it a permanent session.

I use Firefox Focus as my default. It does this. No tabs, no cookies.

There's a setting to change that.

It shouldn't have to be a separate setting from the overall default browser, but at least it's relatively easy to change.

Yep, Samsung camera will only open Samsung gallery, and will show a "Unable to find application to perform this action" toast if you uninstall it (via adb, because it can't be uninstalled via gui). Also it's the only app you can set to open by double tapping the home button, so you can't configure another camera application with the same ease of use.

They're doing a similar thing with the gmail app, at least on iOS. Practically everything now opens within gmail instead of the actual app. Google Meet links now open in gmail instead of Google Meet. I know they're both owned by the same company... but I don't want to give the gmail app microphone and video permissions.

On iOS if you click a link in a Google app it will ask you if you want to install Chrome or continue with Safari.

On iOS, Chrome is just a skin over Safari's rendering and JS engine.