Hebrew wasn’t “literally synthesised” and wasn’t dead. Jews have continuously been writing and publishing works in Hebrew for the past 2,000 years.
It has evolved naturally to some extent over that time, but much less than other languages - a modern Hebrew speaker can more easily understand medieval Hebrew than an English speaker Medieval English.
What has been synthesised a century ago is additional vocabulary for modern concepts, and this is ongoing for Hebrew as it is for every other language.
Yeah, the story is quite a bit more involved than that.
I don't know much beyond the story of Perelman consolidating Hebrew grammar and dictionary, and having problems with popularizing the old-new language initially.
The point was that other modern languages never had a chance to get this kind of clean up.
It has evolved naturally to some extent over that time, but much less than other languages - a modern Hebrew speaker can more easily understand medieval Hebrew than an English speaker Medieval English.
What has been synthesised a century ago is additional vocabulary for modern concepts, and this is ongoing for Hebrew as it is for every other language.