You can still remove them if you apply enough force.

Now I unscrew the cap with one hand, but I still have to hold the cap so it’s out of the way.

That shouldn't be the case. Companies have done some design work and came up with proper solutions, such as the cap snapping into open position, it'll be completely out of the way provided you turn the bottle the right way. Which actually should work with the one in the picture you posted. Maybe some bottling line somewhere didn't get the memo, or they're using up old stock, or whatnot, those that are simply attached but don't latch are indeed awkward, but that kind of thing should vanish from the market quite quickly especially once tethered caps actually do become mandatory in July.

It's still a change of habit but you get used to latching very quickly.

You can still find those pull tabs in the woods sometimes.

Op, where are you at? I've never seen these OR the aluminum push tabs you mentioned

Drink water and beer.

I saw it for the first time last summer. Did a little reading, and according to the news articles, it was a EU directive, but it had been heavily lobbied for by Coca Cola. If I remember right, all EU countries should have implemented the necessary legislature by June this year.

I personally just tear the caps off. Can't get used to them.

Always wondered why those aluminum bottles I see sometimes with screw on tops are so rare, I feel like they should be used way more. Recyclability of an aluminum can, convenience and form factor of a bottle.

Detach one side of the cap by twisting. This allows turning the cap down to the bottle neck. You can then hold the cap out of the way and the bottle with one hand.

It's shit like this that makes me realise carrying a knife hasn't lost its utility.