You are re-referencing the debunked article.
FYI, you wondered why their open letter to debunk the debunk was not answered, but that in and of itself is evidence of absolutely nothing.
Whatever you think about no reply to Off Guardian's open letter, it does not take away from the fact that they are woefully ignorant, or deceptive in their ramblings. Example, their first question in that letter relates to almost every other complaint, and reads:
"That is to say, if there is no evidence for purification (as we outline in our OffGuardian article), how is it possible to claim that the RNA obtained is a viral genome?"
The straight forward answer is that scientific work has progressed to improve the techniques for doing just that.
The not-so-straight-forward answer is in the science itself, and takes schooling well beyond the education you have demonstrated so far. Still, here is just SOME of that science, which explains how this is confidently done, and you have the opportunity to examine for yourself how little Off Guardian understands regarding the testing methods. A publication from 2013:
https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC3708773/
From Abstract "Background" section -
(quote)
due to the relatively low abundance of viral RNA in relation to host RNA, RNA viruses have proved relatively difficult to sequence using NGS technologies.
(unquote)
From Abstract "Conclusions" section -
(quote)
The approaches reported clearly facilitate successful full genome lyssavirus sequencing and can be universally applied to discovering and obtaining consensus genome sequences of RNA viruses from a variety of sources.
(unquote)
When you understand how this paper directly answers the Off Guardian's open letter question I referenced, get back to me.