Absolutely, yes.
The scientific method is an empirical method for acquiring knowledge through careful observation, rigorous skepticism, hypothesis testing, and experimental validation.
Any observable phenomenon should be studied using the scientific method. The alternatives are superstition or ignorance.
Psychology is a good example. It has been limited by our technology and our morals. The human brain is extremely complicated, and we cannot just disrupt peoples lives to create ideal testing conditions. But that doesn’t mean that psychology is not science. It just means that it has unique challenges.
By all psychologists?
I agree that there is some stupid stuff being done in the name of science, 100%. But the discipline isn’t really the deciding factor imho.
If you are interested, here is sabine explaining how academic is fundamentally broken.
https://youtu.be/LKiBlGDfRU8