I just hope burger king won't change its mind later on because it's not the first international company to accept BTC only to reverse its decision later.
They don't have to change anything. You haven't read posts on the previous page. BK is not accepting Bitcoin. Everything is done by a third party site. It's like Amazon is not accepting bitcoin but you can buy a gift card with bitcoin and redeem it on amazon.
Buying an Amazon gift card with bitcoin and Burger King integrating Bitpay payment platform is different cause we can still consider the Burger King partnership with Bitpay as the company accepting bitcoin payment and I don't see any reason why they will change their mind later if there's no misconception between them and bitpay since Germany is a crypto-friendly nation.