probably because a lot of instructors don't know either/ or care...
Alarmingly true statement. If you are a student pilot try asking your flying instructor (in fact any flying instructor) how he would teach a go-around from a full flap landing at the flare. Type specific of course. Remember this is quite a critical manoeuvre for a new student especially as he/she is about to embark on first solo. Write down the instructors personal opinion.
Compare his step by step answer against the manufacturer's Pilot Operating Handbook. In the Cessna POH it is termed Balked Landing
Similar exercise on the meaning and practical use of Minimum Static RPM. Where is this figure normally located for reference?
Chances are it will shatter your confidence in the instructors knowledge...