There's nothing wrong with "change". It's just another word for "progress".
What's good about the scientific method is precisely that it permits "science to change" when warranted. It is not generally the case that scientists say "X is true", then that "Y is true". It is more like the explanation of a phenomenon is improved so that we now have "X-prime" is true because it is more accurate, or includes more of what used to be exceptional cases. Of course there are examples like "phlogiston" and "ether".
Pretty much everyone assumed there had to be "ether", then Michelson and Morley set about to prove that it existed. They were surprised to find that it didn't. It is a beautiful example of a failed experiment which actually caused a tremendous advancement in physics.
Newton to Einstein is a good example of an improvement on a theory. No one is saying that Newton was completely wrong, just that Einstein's ideas permitted a broader view of the picture, which is a good thing.
As for "science is dogmatic". That is just not the way a scientist looks at things. He would instead look to the theory for help when confronted with an anomaly. He would rely on the subtleties of theory to bail him out, not feel like he must conform to the claims. It's been said many times here, if he really finds a hole in the theory's arguments, and can prove it, he's on his way to fame.