It is a dead end path. They probably are exploring multiple paths in parallel. ein0p claimed that their progress down the dead-end path is evidence that they are making good progress down the productive path. It isn’t. That’s all I’m pointing out.

Don’t read more into the post than that. I’m not going to defend an affirmative claim that they aren’t making progress. They have a ton of engineers and are willing to invest in the field, so it is entirely plausible to believe that they’ll catch up.