Nope, not always. This is the general way things work and as anything involving humans there are caveats and exceptions.

For instance, some branches of science have an easier time gathering evidence and data, while others have practical constrains that make it more difficult.

I've purposefully skipped over some other problems like the repeatibility crisis in psychology and other social sciences, but I do plan to write separate posts about those topics in the future.

My main motivation here is to do my small part in battling the unjustified anti-scientific sentiment that has become too popular and to explain some of the misconceptions people might have about that.