It’s really hard to see a language barrier affecting the sample synthesis instructions. It’s a few short paragraphs of “mix two things together and put them in the oven.”
The paper is just a guide. Who would replicate likely needs to contact the authors to understand the implicit details of the recipe. That is process knowledge. There's a good reason world-leading lithography happens in that region. With luck, researchers and engineers will be able to refine and industrialize the process these coming years.