Wow that is shockingly direct, but I'd disagree with you on both points. I think someone can be legalistic and still be saved, despite their total ignorance. I'm not saying all legalists are saved, and those who teach are in greater danger. But I've known many "simple"oneness people who could not really discern God's Word and commands from the standards of the local church and pastor. I have hope that by God's,grace they will be saved.
Second, i find your statement that you "dont know anyone who really thinks standards save" frankly shocking. You no doubt know more OPs than I, and I'd certainly say that many or most I've known certainly believe that standards save. They wouldn't use that phrase, but certainly believe if they cut their hair, wire pants, make up, failed to tithe, went to a sporting event or movie, etc that their salvation would be in jeopardy.
No, mostly I agree here. I dont think someone has to believe in inerrancy to be saved. There are major doctrines that are important. Personally I'm not willing to condemn all Catholics, and certainly not all Catholics of all time. But of all the "Christian" denominations or "churches", I'd have the most concerns for Catholics because of their superstition and outright idolatry, their legalism, their theology, and
Revelation 17 (depending on one's interpretation of course).