I would have thought so - it costs Monzo a 2.5% fee outside of UK/EU for ATM withdrawals if some people use it extensively to withdraw cash rather than using POS terminals outside of UK/EU it obviously costs Monzo a lot of money for the users to receive the benefit of good exchange rates.
You can get enhanced verification which ups your ATM limit to £2000 monthly limit , but if Monzo review your usage and see that your record of usage is outside EU and mainly cash withdrawals they might not feel inclined to give enhanced limits -
Your £1000 limit if all cash withdrawls at ATMs cost Monzo £25/month which is unsustainable on a continuing usage - presumably Monzo would have to consider charging eventually for a few that only withdraw cash outside EU