It is true, scientists are humans, so they can be biased, and they can be wrong or illogical.
But that’s is why you are not relying on scientists being objective, because that what evidence are for.
It is the weights of the EVIDENCE that determine which models are true and probable, and which are false and improbable; the scientists themselves don’t make that determination.
Scientists are responsible for coming with the PROPOSED concepts that could explain the phenomena, and predict the outcome based on past observed evidence. But it is the evidence that determine the scientific values of the whole models (models that include the explanations, predictions and mathematical modeling).
It is the evidence that provide information (DATA, like quantities, measurements, properties of the phenomena, etc) about the phenomena, and it is these evidence that will either verify or refute the proposed models.
There are several mechanisms in place, in which all models - models meaning “hypothesis”, “theory”, “theoretical model” - must pass the requirements of Scientific Method and Peer Review.
And the models can only pass them if there are evidence and data that support the models.
So it is the “hypothesis” that must be tested, not the “author” (scientist) of the hypothesis, and it is the hypothesis, not the scientist that must undergo Scientific Method and Peer Review.
Science isn’t about popularity contests between scientists. Science is about the testable and tested models.
The theism as a model or concept, isn’t testable and tested.
For instance, in Christian theism, the concept of the existence of god, you cannot test god, you cannot observe god, you cannot measure god.
You need to remember evidence should provide information about the phenomena, such as -
- been able to examine the properties phenomena,
- to observe or detect the phenomena,
- to quantify the number of evidence (needed for being empirical, and used past observations to make predictions),
- to compare evidence against each other,
- to test and analyze the phenomena,
- Etc.
You cannot do any of the above with god, hence theism is an unfalsifiable and untested concept.
God isn’t a physical, nor natural phenomena that can be observed and tested.
Still using Christian belief and religion as example...
Your can also not test any of the miracles of Jesus and his disciples, the belief of resurrection, or that of angels and demons (or demonic possession), etc.