Is it inevitable that in order to accept scientific discovery all humans must think the same way and accept the same line of reasoning?
You also need to take into consideration 'social sciences' and sociology to get an idea of how individuals and societies relate to each other in given circumstances. Those with power will manipulate how society functions through sponsorship and control of governments and media outlets, so that although we may have an understanding of how the physical world works, our understanding of the social world will be skewed by the lies we are fed from above....
There is an immense difference between acceptance and understanding. One can accept the Theory of Evolution without understanding it or accepting the methodology involved while at the same time believing in creation or intelligent design. One may easily accept that a new bit of celestial rock has been discovered and that it will pass between the moon and the Earth, but they have no idea what that means, how it was discovered, and certainly not what it implies. Perfect creation is still good with them.
So, yes, if you would like people to understand what it all means and how it applies to our reality, they must begin using at least a modicum of critical thinking in order to grasp the objective reality of our Universe instead of the beliefs previously held. Is it inevitable? I don't know, but I doubt it. It will take a large effort on the part of rational thinkers and a good deal of effective diplomacy to pull that one off.
the truth is the truth
I didn't say what was true. I said the truth is the truth
If that were true, then our scientists would all agree with each other. Instead, there are some spectacular fights among them. For example, Leonard Susskind and Steven Hawking over black holes. Gabrielle Émilie Le Tonnelier de Breteuil, Marquise Du Châtelet and her public disagreement with Sir Isaac Newton. The infamous battle between Tesla and Edison. Michael Faraday and just about every scientist of the day. Albert Einstein and ... well ... Albert Einstein. We are all products of "us," and that means we have our own approach to "science."
I don’t think so. In fact, the more alternative explanations that people can generate, the closer to the truth we’ll come.
Of course not. As we learn more and figure out more things, scientific theories will always shift. Not everyone can make the shift at the same time, and I wouldn't want to live in a world where that would happen. But if you are a scientist, I think it's important to learn the rules of how science works and not go around making stuff up and saying it's science. That applies regardless of your discipline or your point of view. If you sincerely believe that the moon is made of green cheese, you need to validate that belief with some kind of proof. Otherwise it's just stuff you made up. It might be your theory, but again, you'd better be able to back up what brought you to that theory. That's science. If, on the other hand, quantum physics is over your head and you choose to state, as a non-scientist that you think it's all baloney, it's a free country and you can say that. But your friends and followers are entitled to the information that you don't actually know science.