Why is it easy to say skrimp (misspelling for shrimp) when it's impossible to say ask? (it comes out aks or axe)?

is there some reason for this anomaly? is the "sk" combination one of those weird rules like i before e except after c?

https://www.tiktok.com/@righteouseats/video/7282867077898308910

Why is it easy to say skrimp (misspelling for shrimp) when it's impossible to say ask? (it comes out aks or axe)?
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