No problem. Outside perspectives are usually interesting to explore.
I hate the idea that I’m falling for some sort of pseudoscience and weigh that against (a) how it tangibly helped me, and (b) whether we simply haven’t found the proper way to test its efficacy properly
Perhaps a different approach might help.
[ I will caveat the following with : i am not , in any way, qualified to give any psychological advice or medical suggestions, this is not that, it's just my personal opinion. ]
Rather than try and figure out if the test itself is flawed or not, look at the outcome instead.
Based on how you described it, it wasn't the specific methodology itself that was helpful to you.
You can take whatever positives you experienced and explore them completely independently.
Does it matter that you used a potentially flawed methodology to come to a useful conclusion about yourself ?
A similar concept : https://solar.lowtechmagazine.com/