I agree that Lucid's lack of bandwidth at this stage necessitates focus on little more than trim variations from core models.
However, I'm not so sure that Lucid can or should try a direct challenge to the Model Y at this point. The Y is now the best-selling car on the planet, leading sales in 53 global markets. It should be remembered that Tesla only became able to take on the staggering capital costs of expanding into the mass market once it established a foothold in narrower, pricier segments.
I know it's disheartening to watch Lucid's slow sales in today's economic climate, but I think their central strategy is still sound: aim initially for the margins that only luxury EV sales can offer given the cost of batteries; take on one segment at a time; get a foothold as the most efficient, most technologically advanced, and longest-range product in that segment; and then expand to another segment.