I have a high opinion of scientists, unfortunately this is not the majority.
Scientists look at actual facts, not assumptions and based on all facts, make a conclusion.
if facts or knowledge are missing, they find them or search for years to find them.
They don’t say, “ I couldn’t be bothered, I’ll just make an assumption and shut down everyone who questions it”.
A competent confident Scientist will encourage peer review and questioning of his conclusions. The more the better and he certainly wouldn’t discourage a single argument.
How he built it? I’d first like to know how he knew?