It's not a matter what your or I want to think. The SAE defines L3, L4 and L5 as what is colloquially referred to as "full self-driving" because they can perform the entire DDT when they are on. So L3, L4 and L5 are all "full self-driving".
Lovely. And what Tesla is considering releasing is Level 2+. Not Level 3. Tesla can not perform the entire DDT. We see zero evidence that it can perform the entire DDT. And we see evidence that it's ODD is basically clear roads, no precipitation, no glare from the sun. So you can't use it during certain times of the day, you can't use it when it's raining moderately, you can't use it when there's snow on the ground or the lane lines aren't cleared entirely (half of the winter where I am).
While the recognition of arrows on paved surfaces gives me slight hope that summon will follow lane rules in parking lots, we also see a lot of evidence that they're still heavily relying on map data. And as long as that's the case, it's just not a feasible solution. So I consider that a hint of a half step forward.