That’s the system the EU set up - Hungary didn’t make them do it. And saying they are “abusing their vote” because they don’t vote the way you want them to just bespeaks the arrogance of anti-democratic elitism that is precisely on display here.
Veto is not voting. Voting is an instrument of democracy and veto is an instrument against democracy. That instrument was created because there are cases where UNRESTRICTED democracy is wrong.
There might be cases like that where unrestricted democracy fails and the checks and balances were left to the peers in the union. It is obvious that one member treating the veto as an asset and milking for all that it's worth would destroy the union.
That's why there is a check/balance system, where other members of the union will make anyone attempting this stop.
Hungary attempted it. They were made to stop.
Hungary is 1% of the European economy 2% in population. Would you imagine America could work if any 2% population district could have a veto on anything they like and milk it for bribes?