I downvoted you because of the tone of your post, but I do tend to agree with you - almost everything about LLDB strikes me as pretty crappy, although unfortunately the same applies to GDB. In this case, LLDB is no better:

    (lldb) print v[0]
    error: call to a function 'std::__1::vector<int, std::__1::allocator<int> >::operator[](unsigned long)' ('_ZNSt3__16vectorIiNS_9allocatorIiEEEixEm') that is not present in the target
    error: The expression could not be prepared to run in the target
    (lldb) version
    lldb-300.2.53