He didn't reach the top, though. I said it many times on this board, Dalić is not a great coach. Had many fuckups this WC which now seems impeccable. But international football is more about spirit, motivation, and collective. He's got their trust and that's why I'd like him to stay. Croatian NT will need someone able to carry a transition. He's the one to decide if capable of it.
But leave the results alone, Croatian football is rotten top to bottom. There are lots of problems needing to be addressed. Starting with the personnel behind it. Dalić has already called out on them and talked about some other issues. He's got trust from ordinary people, public support, he's a living hero who recognizes what should be done. If he decides to fight it, they won't be able to stop him and things could change.
That's the main reason I hope he stays. And shows some courage.
You'd best read the article. I can answer additional questions and explain the details.
https://en.wikipedia.org/wiki/Zdravko_Mami%C4%87
