Secret Science
It is obvious to anyone who undertakes even a cursory review of alternative research that the mainstream does understand most of evidence against them. However, they continue to not only allow, but to promote the erroneous ideas and doctored evidence that will be their eventual undoing. Why would anyone go to so much trouble to dig such a deep hole for themselves?

Reason #1
The ongoing, relentless assault on Darwinian evolution by religious fundamentalists is the main reason scientists can't afford to disseminate these truths through teaching. If fundamentalists would keep their opinions and theories inside churches, where they belong, scientists would be far more able (if not inclined) to acknowledge where reality does not coincide with their own theories. But because fundamentalists stand so closely behind them, loudly banging on the doors of their own bailiwick, schools, scientists have no choice but to keep them at bay by any means possible, which includes propping up an explanation for life's origins that has been bankrupt for more than three decades.

Reason #2
Another reason scientists resist disseminating the truth is that it would so profoundly change the financial landscape for many of them. Consider the millions and billions of tax dollars and foundation grants that are spent each year trying to answer one question: Does life exist beyond Earth? The reality of two types of prokaryotes appearing suddenly, virtually overnight, at around 4.0 billion years ago provides overwhelming testimony that the answer is "Yes!" Clearly life could not have spontaneously animated from inorganic chemicals in seas comprised of seething lava rather than relatively cool water. So billions of dollars of funding would vanish if scientists ever openly conceded that life must have come to Earth from somewhere else because it obviously could not have originated here.

Reason #3
A third reason scientists avoid disseminating this knowledge is that spontaneous animation is a fundamental tenet of their corollary theory of human evolution. As with life in general, scientists insist that humanity is a product of the same protracted series of gradual genetic mutations that they preach has produced every living thing on Earth. And, again, all this has been done by natural processes within the confines of the planet, with no outside intervention of any kind, divine or extraterrestrial. So, if spontaneous animation goes out the window, then the dreaded specter of outside intervention comes slithering in to take its place, and that idea is so anathema to scientists that they would rather deal with the myriad embarrassments caused by their icon, Charles Darwin, and his clearly bankrupt theory.