That latest study does not discredit several additional key locations (besides the, so-called, "lone nut snipers lair") that were also behind and above JFK during the shots.
Some/several of the lame-stream media who are trying to regurgitate that latest study have even misinterpreted and misrepresented (a.k.a. the lame-stream media LIED, again) that study as only claiming that the, so-called, "lone nut snipers lair" could have been the only firing location.
Then there is the issue that the HSCA determined, that the grassy knoll picket fence assassin's shot missed hitting anyone and missed hitting anything (other than that GK fence fired shot bullet buried itself into the grass to the far-left of the limousine)