Earlier quoted context omitted.
Unfortunately, from the 18th December, that's stopping: https://monzo.com/blog/2017/10/17/atm-limits-announcement/
It's only for ATM withdrawals. If you are in first world country where card payments are well integrated this is not issue for you. Granted, in many developing countries you need cash so this will be issue.
There are plenty of cards in the UK that do not have a foreign transaction charge on purchases (nationwide, lloyds avios, for example).