The e in many words isn't silent, it's a modifier. Kit and kite are different words. "th", "z", "w", and "v" are all really different sounds. While certain accents (or children) do occasionally conflate them, in basically every case, it's technically incorrect. Zebra, Webra, Vebra, and Thebra are all totally different words to a native English speaker.
I'm absolutely behind the idea of simplified English where spelling and pronunciation match. But that's a lofty goal, as first one would have to canonize English, which is basically impossible at this point. Then they'd have to tackle homonyms, like cot and caught (assuming canonized English has these pronounced the same).