That's exactly the opposite. Could you add a note for that in the article, please?Right now GPU offloading can work with Wayland but there's no screen synchronization and thus tearing can happen, but that will ultimately be corrected.
GPU offloading with X DRI2 has no screen synchronization, and then has tearings.
But with Wayland there is screen synchronization, and no tearings.
However glitches (showing incompletely rendered frame) can happen if you don't add a delay between the rendering and the presentation.
To remove these glitches, you need either to add a delay (an embedded compositor adds one) or wait the dma-buf fences kernel feature (which I hope will come soon).