What you say is right, but it does not contradict the parent poster.
Both reasons for the high count of sperm cells are true.
There must be many sperm cells to survive the adverse conditions, but there is also intense competition with the sibling sperm cells.
The DNA of the sperm cells is generated by a random generator, which is the meiosis mechanism, which randomly shuffles then randomly discards half of the father DNA.
The sperm competition then discards the random choices that happened to be bad, implementing an optimum search algorithm.
The sperm competition is only a first filter for rejecting bad random choices. Many embryos will die very soon, without ever developing, rejecting other bad random choices.
Both reasons for the high count of sperm cells are true.
There must be many sperm cells to survive the adverse conditions, but there is also intense competition with the sibling sperm cells.
The DNA of the sperm cells is generated by a random generator, which is the meiosis mechanism, which randomly shuffles then randomly discards half of the father DNA.
The sperm competition then discards the random choices that happened to be bad, implementing an optimum search algorithm.
The sperm competition is only a first filter for rejecting bad random choices. Many embryos will die very soon, without ever developing, rejecting other bad random choices.