That only means that they are aware of the flickering not that they did it on purpose or are intentionally not fixing it. For all we know, fixing it might result in lower blacks, or lower detail, or floating whites and/or blacks, or motion handling problems across the board.... I'll take flickering at 48hz over any of those issues.
Tech/software is not equal among manufacturers, ya know. And all of the manufacturers have at least one of the previous mentioned flaws that make watching anything less than acceptable- IMO.