I don't think I have to list the highest drafted QBs in years past to prove my point.
In 2021, the first 3 picks were Lawrence, Wilson, and Lance. The 1st, 2nd, and 3rd players taken.
In 2019, Murray, Jones and Haskins...picks 1, 6, and 15.
In 2018, Mayfield, Darnold, Allen, Rosen....picks 1, 3, 7 , and 10
Yes, 2020 was better. 2022 cannot possibly be judged yet. But the point is, drafting a QB with a top pick in the first round has about a 1 in 4 or 5 chance (at best) of producing a top level NFL QB. ...or, as fans expect of a top 3 pick, an elite game changing QB.
If I'm the Rams, I use that 1st round pick to get a LT, OLB, or CB (they're going to be picking top 15, probably top 12 or 10). The odds of that player being a long term very good to top flight player at those positions is much higher. But more, teams tend to find themselves "stuck" when they get a QB who is pretty good, but has flaws and just doesn't seem to quite "have it". Take Goff as a good example. At least the Rams had the cajones to move on and do better, than remain stuck like team after team seems to do hoping their guy will finally get better.
Changing QBs is a HUGE change on a team...a disruptive change. So it needs to not happen very often.
Better the Rams trade or acquire via FA a good, solid, proven NFL QB. He doesn't have to be elite in order to win tons of games and the Superbowl.