I have to say, I don't have a problem with it. I know it's more Govt restrictions and there will be people who will kick off about it, but it's not that much of an imposition to show an app with your vaccine status on it. Most people have already had the jabs, and those who are medically exempt won't have to need a passport.
The people who kick off about this complain about their freedoms being restricted, and being free to have a choice. In my book, you'll lose your freedoms (along with everybody else) if covid rates go through the roof again because of huge transmission rates. And as for your right to choose, you have a choice, you either have a vaccine and prove you've had it, or you choose not to engage in those things that require you to have one.
I know not everybody will agree with this, but this is my take on it.