it probably would have been better if he just quoted the original poster on sdf instead since his articulation is missing a few details...
the original post on sdf suggests that because the paper (mis-labeled in the tweet, but really an irrelevant and distracting detail here) mentions dsi improvements for m1.6 speed, that it translates to a m1.6 supercruise performance target for the j-35.
a key point id like to point out is the poster interprets improvements as implying the design to be optimized for m1.6
finally, since the real object of interest are the excerpts from the paper, the specific images themselves are what should have been excised and uploaded here, instead of the tweets, which again, act only to muddle the clarity of what may already be low quality content.