no, you can do CQC with a fixed magnification optic fairly easily it's just training to shoot with both eyes open, you can also peak over the top of the optic for quick close-range shots. Also 1x on an LPVO still has a terrible eye relief so for in-door shooting you wouldn't be taking the time to line up the sight anyway just pointing and shooting.Do marksman get 1-4x28 LPVO scope while normal infantry get 3x or 4x32 ACOG? Why don't just give everyone LPVO? Isn't the 1x mode better for CQC?
Where did you get the information the LPVO is a 1-4x, seems fairly pointless offering only a 4x max magnification for the DMR.