Maybe not?Another way to put it, should I simply take all comments re heights as generally applicable to all of us, regardless of what speakers we have above our heads?
For Atmos, many folks have to compromise on how their "height" speakers are positioned.
For optimal playback, overheads positioned as shown in the Dolby instructions is really the only way to expect results close to what the production team desired. How anything else (from side wall to floor level ceiling bounce locations) reproduces the mix is anyone's guess..
IMHO if you want to consider other folks mix impressions, it would be best to stick as closely as you can to the others with overheads similar to yours.
We all do the best we can depending on our individual circumstances but do get very varied results.