Certainly could hurt. Saying anything related to China at that moment could sound like conspiracy theory, xenophobia or racism, certainly bringing in question the reputation and professionalism of these scientists. Now... "Scientists believed..." Considering the realm of professional scientists, beliefs have no value and should be guarded unless sufficient evidence arises. They behaved well by not announcing it. Thei…
Where do you think hypothesis come from? Ingenuity based on educated beliefs is a the very core of science. The above stance sounds a lot like the cult of science which has become so pervasive.
They did not behave well. Many scientists put forward the seafood market and then animal vector believes which have equal or less evidence.