Science is always willing to change in light of new evidence.
"Condescendig attitudes" and "arrogance" are perceptions of the reader. Attitude has absolutly nothing to do with a logical debate. Something is either logical or not. A person's tone has nothing to do with a statement being true, false, or undeterrmened.
However, you may see "argument from intimidation" from time to time, but if you realize this with out getting butt-hurt you can easily refute such arguments. Or, you can counter with a baseless attack of your own and call people or "science" out with an ad-hominem attack on their arrogance.