Why would current-day vegans want it? Most of the vegans I know gag at the idea of eating meat.

The real target market is current-day meat-eaters who wish, for ethical or environmental reasons, that they ate less meat.

Or my position: that the industrial-scale torture of factory farms is a stain on humanity, but most people's consciences are too stunted to even engage with moral questions if it means changing their own behavior. In the presence of indistinguishable lab-grown meat, this argument against more ethical practices evaporates.