So some teachers have a knee-jerk reaction to any use of the word "get" - and this may be where the 'negative idea' comes from. This seems to me silly. But it's true that "get" is used more commonly in speech, and it can seem excessive when used in writing; it is also sometimes the best choice, even in writing.
PS There's another issue: In some dialects 'we got' is used in place of 'we have got'. This is non-standard, but common and unexceptionable: when, in CSI, someone says 'I got blood here' there's no room for doubt about what it means; they've found a trace of blood.