Depends what you mean by that. I don’t perceive that thinking or science is a hindrance. The problem I’ve encountered and that I think some others have encountered is that the mode of activity within the brain that occurs when you’re deep in analytical thought is very different to the type of activity that goes on when you’re working with energy or perceiving non physical things. Even before subs I’ve observed that they are two completely different sets of pathways (in terms of brain/nervous system/body interaction). So its difficult, although not impossible, to engage both at the same time.
What I call “spiritual” has a big energetic component to it, even in the way consciousness interacts with the world. Circulation of energy through and beyond the body plays a big role in being able to communicate with non human consciousness for example. Abstract thinking can easily trap the energy in the head. I’ve been able to switch to one or the other consciously, but most of the time they’re different “thinking hats”, and one is closer to a “feeling hat”, or a “willing hat”. In my experience people can spend a lifetime trying to align those different modes of being.
Can you think “scientifically” all the time and be spiritual? Probably not. Even just to study alchemy or certain spiritual subjects I choose to put on a completely different world view and try to bring as few modern assumptions to the table as possible. Energywork often involves the astral body and is very much about lived experience more than it is about the abstract. You integrate the spiritual stuff after the fact, it’s often a completely different realm to that of code, math and language.