I feel like I’m having a stroke.

You should hear the Dutch say "yah-vah-shchkript" with a throat clear and spit take.

The Dutch pronunciation of javascript differs from the English one only in the first syllable. Roughly zero dutchies would insert the Dutch schr- sound in a loanword, and even fewer would do that while leaving the foreign -ipt suffix intact.

Maybe they're just taking advantage of the opportunity to expectorate then.