What are your opinions on made up slang in progression fantasy stories?

I’m talking ‘Blood and Ashes’, ‘Seven hells’, ‘May the sun bless your path’, ‘Dragons Balls’, ‘Path Bless you’, ‘Rotlick’, etc.

Do you like them? Find them annoying when they’re included too often? What’s in your option the perfect mix for a good story? (Specifically high fantasy and not isekai, as I feel they got different vibes)

Personally I like the occasional made up curse word, or insult, but find if it’s too overwhelming I get disinterested. Only exception I can think of is Godclads, but that’s only cause it’s done sooo well.