I was about to say this won't help at all with the microtransaction problem detailed in the article, but then I read your link and found this more complete (although confusing) description of the exemption you name:

>single transactions must be less than €30, up to a maximum of €100 or five transactions

It's the "or" there that I don't quite understand. Does this mean that any 5 transactions can be made without 2FA as long as their cumulative total is less than €100? If so, does the system ask for 2FA after surpassing the €100 limit? Or does this mean that 5 transactions can be made as long as each is under €30?

While probably helpful to families and individuals who face these sorts of issues, the explanation of the law could certainly be clearer here...

Its the same rules as contactless credit card payments by most banks here: after every 5 transactions you need to verify, everyone not larger than 30€ and the sum of these 5 transactions may not exceed 100€. If your next spending will break these rules you need to verify it

Limit is 100 Euros, or 5 transactions. Reach either = 2FA. Single transaction limit is 30Eur. If higher = 2FA.