The vast majority of people attempting to get published during the "Golden Age of Science Fiction" for starters.
Even reading the autobiographical writings of those that became big names you'll find a seemingly endless runway of rejection before liftoff, cancelled acceptances, demands for rewrites, multiple publisher approaches, etc.
One publisher getting cold feet isn't the end of the world, ask any writer that's made it.
RTFA. He had a contract, which the publisher asked him to cancel. He wanted a transparent explanation for the reasoning behind the cancellation, and never got one. The correspondence was well considered and polite, but the obvious conclusion is that the publisher caved to the woke mob, and didn't want to admit it.
It's worth it, we need to put hurdles in front of people. Really make sure everything is at least threatened a tiny bit, even if they do make it out the other end unscathed.
Then we can know that their work is superior, probably due to their privilege.
Or maybe it would've been better to destroy his work completely? Then the world will be better off for it.