Author here, not assuming they are the same, just they sprouted from the same tree. And even though they diverged a lot, they are still more similar than differ

Author here, not assuming they are the same, just they sprouted from the same tree. And even though they diverged a lot, they are still more similar than different. I am basically afraid of a monoculture of that family of engines, specially given chromium dominance in terms of browser vendor.