I heard Simms say that Goff was a good QB. No one is saying he's a JAG. I know it's a lot easier to defeat arguments by not representing them properly but that's pointless.
Simms said he's a good QB but he doesn't feel totally comfortable with him. He doesn't know for sure that Goff is going to deliver.
That's a reasonable take. We can be Rams fans and acknowledge that. I understand the feeling. I was holding my breath last night on every offensive drive in the 2nd half hoping there wouldn't be some disastrous play.
I got the impression that Simms has watched Goff a lot.