No, Stability hasn't foundered yet. They're floundering: https://www.merriam-webster.com/dictionary/flounder

Per wiktionary (https://en.m.wiktionary.org/wiki/founder) Usage Notes: Frequently confused with flounder. Both may be applied to the same situation, with the difference being the severity of the action: floundering (struggling to maintain position) comes first, followed by foundering (losing it by falling, sinking, or failing).

I think “flounder” is fine in this context.

Confidently incorrect is certainly the worst kind.

You have floundered in analyzing the headline