Touch screens are shit tor buttons. They can be hacked. They can be unresponsive.
There's a load of other reasons, but either or both are enough to realise that a physical button is much safer. Perfect example of safety being lost in technology. Just because we can, doesn't mean we should.
The urge to act like an asshole on another platform is just too much.....
Twitter was a cesspool long before trump, and it was made such by the same people trying to distance themselves from it now.
"Ohh.. I wasn't a cunt on Twitter, I'm one of the people moving away from it".