Well, given they have monsters that are basically living refrigerators... even so, salting and smoking food is from the stone age.
Don't they teach hand to hand combat before practicing swordsmanship? But probably the kid isn't the wisest...
Think it's a common trope mc trying to not stand out but ultimately doing everything to stand out among isekai. Didn't came across a story where attention bites mc in the ass or actually not standing out, but the latter would probably make things boring for the reader...