I think “scientism,” “unscientific,” and “pseudoscientific” all have different and necessary meanings: respectively, “attempting to use scientific epistemology but misunderstanding it”, “using bad epistemology,” and “using bad epistemology but making a deliberate effort to look like one is being scientific”. The word closest to meaning what you want “scientism” to mean is probably “Bayesianism”.
I think “scientism,” “unscientific,” and “pseudoscientific” all have different and necessary meanings: respectively, “attempting to use scientific epistemology but misunderstanding it”, “using bad epistemology,” and “using bad epistemology but making a deliberate effort to look like one is being scientific”. The word closest to meaning what you want “scientism” to mean is probably “Bayesianism”.