Most Bane players actually agree with 6-4 Lex. I know Max is on the fence more toward 5-5 but he doesn't disagree that much with 6-4 either.
Bane definitely gets zoned effectively in this matchup. It's not just about projectiles but about using proper space control and unblockables. He doesn't have a mobility tool that gets him in without being punished, and he can't just dash in with my space control options.
With the mine thing, you cannot just armor through it. Against Bane I want my mine right in front of me most of the time. The point of it in the matchup isn't to use setups to trap you into it. It's primarily used to take away armor hits and prevent a normal footsie game to counter Bane's whole gameplan. More generally, to stop you from getting in my face while creating space for me to zone, counter him, or put my trait up. If we're both right on the other side of it, and you try to armor through it with double punch or something like you're saying, pretty much any normal I throw out is going to beat you.