Oh I'm not saying they should. What I was saying was it's possible, however unlikely, that he'd come in and do an Andrew Luck type of thing where they win +10 games in spite of his protection.
This is actually one of those cases where, as I said earlier, an offensive line can be so bad that you wouldn't want to put the rookie behind it to get killed.
Problem is, though, in order to get Goff you gave up a bunch of picks you could have used to rebuild you offensive line. On the other hand, when you look at the INSANE amount of draft resources that have been poured into that offense and just wasted, you wonder if it would matter. Just the wasted picks at the RB alone before Gurley is embarrassing(only non-UDFA left is Tre Mason who they weren't sure was still alive until last month and he's probably going to jail).
By the way, I don't say all this stuff to bash on the Rams; I kinda feel bad that their fans are stuck with this garbage(edit: also for their St. Louis fans who got royally screwed). I say it all to bash on their head coach. It's kinda sad to realize that he's been a head coach for 22 of the 51 seasons there's been a Super Bowl and yet his biggest accomplishment will probably having the most losses of any coach in NFL history(if the Rams go 6-10 this year). Without stepping into #hottaek territory he's kind of a smarmy prick, e.g. telling Mike Zimmer to "watch the tape" when the Rams almost killed Teddy Bridgewater with a dirty hit last year(spoilers: the tape showed the Rams almost killing Teddy Bridgewater with a dirty hit), and hiring a legit sociopath as DC in Gregg Williams(how he's not banned for life is beyond me).