It means that I do "research". e.g.
- https://guzey.com/how-life-sciences-actually-work/ - https://guzey.com/science/sleep/14-day-sleep-deprivation-sel...
- https://guzey.com/how-life-sciences-actually-work/ - https://guzey.com/science/sleep/14-day-sleep-deprivation-sel...
At most I could see what you have written as "study" of others' research but presenting yourself as a "researcher" and what you do as "research" is misrepresenting yourself and comes across as an attempt to claim for yourself greater expertise than you seem to have.
You should make clear your level of experitse and your knowledge about different matters that you like to discuss in your blog.
If you are the only person calling yourself a "researcher" (or it's only you and your dear friends and blog readers) then you are misrepresenting yourself.