I think it's a general trend. Haven't had the fortune to visit the EU recently, but here in the UK, we've not minted as many coins recently. I suspect our good friends & neighbours are experiencing the same thing.
Transactions are increasingly done digitally (I.e. the rise of online shopping), and in person transactions are increasingly done via credit/debit cards. Only something like 15-20% of in person transactions are cash, down from the 50-60% mark about a decade ago.
Covid really drove a lot of people to avoid cash (as to limit possible means of transmission), which exacerbated things. Interestingly enough, the recent cost-of-living crisis seems to be driving cash transactions up; it's believed it's easier to budget with physical cash.
Furthermore, with inflation, coins are worth less & less every year so very gradually, people will move more into banknotes than coins as banknotes (typically) have a higher value.
Then there's demand from banks. If banks have enough from precious year issues, they won't ask for new ones to be made.
And because coins are circulating less frequently, they're lasting longer (i.e. not wearing out as quickly).
So, the coins already made are surviving longer & being used less often. Demand for coins is just down across the board.