The very last few lines of that page seem to say that it doesn't actually make it faster, or maybe makes it only a little faster. Anyway, not twice as fast, as promoted.
> PinePhone 1.2 pmOS CE (convergence package) with 32GB SanDisk eMMC: before 55MB/s, after 125MB/s
> PinePhone 1.0 Braveheart edition with 16GB Kimtigo eMMC: before: 80MB/s, after 110MB/s