Earlier quoted context omitted.
Science is science reporting. Normal people can only understand what is reported. If you want to read the actual papers, prepare to spend a couple hours to barely understand what is going on. Most people aren’t able to do that for all of the hundreds of papers published each year that could be relevant to their lives.
I wish scientific journals would start encouraging “human language”, as opposed to impenetrable thickets of mathematical gobbledygook. When I was still in academia, reading papers germane to my field was a chore. It would take considerable time to decipher a complex looking mathematical equation, only to go, “oh, they just mean X.” Basically as soon as I saw a \Sum sign, I knew the equation was pointless peacocking.…
Try reading Euclid's Elements. It was written before equations had been invented and is for the most part "plain language". However, it reads as vastly more obtuse than an equivalent modern formulation of the same facts with symbols and algebra.
The nice thing about mathematical notation is that a simple, one line equation can express relationships and detail that what would otherwise take a full paragraph to unpack. Personally, once I'm familiar with the symbols and underlying concepts, an equation is much easier to hold in my head than a long jumble of plain language explication.
I think most researchers aren't simply pomping up their paper with obtuse symbols. Mathematical notation is both compact as well as a common language, so why not use it? As a side benefit, we also get to lean on the vast background of mathematical research which offers potential precision that would otherwise be completely lost.