I think much of this is a legacy from the Communist time and by design.
Communism is blamed for a lot. And it justly deserves that blame in most areas. But if you read "Relations" (Rokonok) by Zsigmond Móricz (published in 1932) you will see the family/clan based culture and the politics/problems it creates in Hungary predates Communism.
The Communist government also discouraged information sharing in order to maintain divisions between groups and therefore stop people organising themselves into a coherent opposition to Communist rule. The controls were via overt and undecover policing.
That I can agree with. Even today. You should see how a little gang of old ex-communists have been fighting dirty in my village local election for the past month**. When they were in power before they could not even deal with the garbage in the village, or get basic traffic control issues dealt with for public safety. But they sure "favored" their group members. For example, the last mayor from this group is still being tried in court (partial verdict so far fined him 100,000 HUF) for not properly accounting for over 1 Million Forint in "personal expenses" he received as mayor. Would be a sad day if they win again today. And a lot of people not in this little group, are intimidated and afraid to speak out except in private out of fear of reprisals. An "evil prospers while good does nothing" problem.
But I can't vote here. So I can but watch, and comment on, these things as they unfold.
** Just so happens to be the "ex"-communists here locally that are like this. I am not excluding a similar gang from a different party behaves similarly in other villages. Which is why, where I am actually registered to vote, I am declared as non-partisan. Washington's Farewell Address had a lot to say about parties that is still true today.
There's a parallel here I guess with efficient markets which one could apply to elections. If politicians market themselves by advertising their policies, in order to have efficient markets, worthwhile information must be available to the electrorate in order to make an informed choice. But what is the information required for the informed choice? It couldn't be based on manifesto alone since all politicians generally lie so what is it?  No idea.
Problem is, there is "information" and then there is "complete and utter BS". And it takes an order of magnitude more work to clean up BS than it takes to produce it.
Democracy only works if the electorate is well informed. And there is actually a lot of information is available, but that does require researching it (and sometimes digging for it), and people tend to not do this. Too much work. Leaving it to the parties (or little local gangs), and their lobbyists and supporters to "swing" the information and color it in one way or another (gossip, half truth, or even outright lies). While "fact checking" helps (Hungary needs an independent "factcheck.org") it only works if the voter takes the time to review such fact based corrections. And many don't. Often because they are simply too busy earning a living. But they still vote.