I just received this text from my bank. Royal bank of Scotland (UK)

(To help keep your money safe from possible scams, we're going to set limits on payments we identify as going to cryptocurrency exchanges. From 16th March, we'll limit payments made by Faster Payments and Debit Cards to these exchanges to £1k a day (£5k in any 30-day period). Find out more at https://www.supportcentre-rbs.co.uk/payments-cryptocurrency)

I am not in the threshold for this to be an issue, however, how is it they can limit crypto currency purchases but they can’t limit people from blowing their life savings gambling?

Are the banks scared or do they have a genuine concern for their customers?