If I recall correctly, once those hundred flowers bloomed, all of them that were found to be less than ideologically pure had their heads chopped off by the regime.
That of course was the whole idea. When Mao Tse-tung said, “let a hundred flowers bloom, let a hundred schools of thought contend”, he was merely tricking opponents into revealing themselves to the regime. After they were rounded up and exterminated, Mao launched the “Great Leap Forward” the following year, a disastrous experiment in cottage-level industrialization that devastated the countryside and resulted in widespread famine and even cannibalism due to cropland destruction.
To any thinking person the “hundred flowers” analogy should recall government suppression of dissent of the worst kind.
Not that there are any such in this bunch.