You’re lacking a significant amount of historical and cultural context to understand what that even means though.
For one thing, translating the words alone leads to a significant stripping of context. Additionally, movements around political Islam have only gained sway since secular/nationalist movements failed to achieve their goals in a meaningful way.
Almost all evil has "context" - doesn't make it any less evil.
Yemen has more or less zero reason to be in direct conflict with Israel, it's as cartoonish as papa new guinea suddenly changing their slogan to "death to Cyprus!".
"God is the Greatest Death to America Death to Israel A Curse Upon the Jews Victory to Islam"
Is indeed a cartoon baddie.
(And I'm talking about the leadership, not just random followers)