True, but it doesn't really matter one bit where the writers got the name from, as long as it sounds alien to most of their primary audience. That's what's important.
And Ezri or Jadzia definitely sound more "alien" to most viewers than "Sarah", which is an incredibly common name in the vast majority of Western cultures.
And with the large number of names in human languages I wouldn't completely disregard the posibility put some coincidences
I would not say that in every instance. With Odo for example, I find it very possible that whoever created it had never heard of the extremely obscure, very dated German name, but rather just strung two vowels and a consonant together and thought it was an original creation. I'm originally from Germany and until this conversation I had never even heard of "Odo" being used as a real world name, because it hasn't been a common name for centuries by what I could find out via Google.
Yeah I assume that's the reason he's named Linus.
And yes I agree the "Sarah" is pretty annoying and that Sera, Zera, Cera, Carah or any such variation owuld have helped.
Or if they had added an additional sound to create something like: Saral. Saran, Saram etc.