Sounds like they still have to many 3050 chips in stock - if 4 years latter after GeForce 30 series was released - while the GeForce 40 series is around for more than awhile (already at 3rd tier of marketing gimmicks - with 3070 Super launched not so long ago) - they releas... still struggle to get rid of 3050 chips. Notebooks is one thing - but Desktop, wise don't remember 3050 selling that well. Still, it's a weird move. Even weirder than the 1660 branch.
No, this new 3050 6GB graphics card is using a different GPU, the GA107-235 which has a die size of 200mm2. The 3050 8GB card uses the GA106-150 that has a larger 276mm2 die size.
Realistically this isn't a card that's primarily a gaming product. It's probably intended for enterprise/commercial use where multiple displays need to be driven. Applications include things like IT/control room displays, stock traders, commercial signage, maybe multiple video streams, other 2D stuff like that.
While this GPU still has RT cores, it was probably cheap for Nvidia to just spin out a smaller die with all the components (CUDA, Tensor, RT) than try to rip out the RT transistors.
Remember that the 3050 release was heavily influenced by the combination factors of the cryptomining mania, massive GPU shortages and silly scalping. There were a handful of $249 models but they vanished almost immediately and most AIB partners focused on selling "OC"-ed $329 models which is too much for this level.
This GPU is being fabricated on Samsung's 8nm node which by now is very mature and yields should be pretty impressive.