This sentiment is correct. Eichel has a laundry list of flaws, and Pastrnak is great, but he's playing with two of the best overall hockey players on the planet.
The number of players who could swap out with Jack, and make a meaningful difference (like, jump the gap to playoffs) on this team while changing NOTHING else, is very small. As has been the case since forever, the best path forward is adding more good players to the ones we already have, focusing our efforts and assets on that
The grass is always greener and our roster outside of Jack and his top line friends is about as bare bones as it can get in this league of parity