Well, it is signalling. It's signalling that there are competitors which are trustworthy enough for a government and it signals the overall trend one can observe how European governments detach from US companies. With some lower hanging fruit and some larger projects.

They have moved as it also allows payment by paybybank which is the uk direct bank payment service

Stripe globally will be worried as countries seek to cut out the card payment middle man and do direct bank to bank account payments

Most government processing is prohibited at Stripe that is why it always tends to be small. Too much risk being exposed to more regulatory scrutiny that is not worth it as payments processor. > “Prohibited Businesses… Government services… Disbursement of government economic support, such as grant” [1] [1]: https://stripe.com/en-br/legal/restricted-businesses