No, they shouldn't. QBs on their rookie contract are far more valuable. The Rams wouldn't have been able to build a team like they have, if Goff was on a bigger contract. Once he gets paid, they need to let go of some of their best earners. It will be the same thing for the Eagles or the Chiefs.
You mean QBs who are actually good. There's little indication that the likes of Darnold, Allen, Rosen et al will ever be at Goff's level. Mayfield may be over the next year or two, but that's also a bit iffy.