Answered: inconsistency between ref training video and game manual

1m06s
During the chapter 3 of the ref training video it stated that according to SG4 that it “Prohibits students from breaking the plane of the field while loading scoring objects” and “You should be gently tossing objects into the robots or onto the loading zone without breaking the plane of the field”
but according to SG4 in the manual

G7 also states that

which shows you are allowed to break the plane of the field for <SG4>
So my interpretation based on <SG4> and <G7>
is that you are allowed to break the plane of the field momentarily while introducing driver control Load into the field by gently putting it on the robot or on the tile instead of gently tossing as shown in the video

Your interpretation is correct. The referee training videos serve as a quick guide to help referees understand how enforce the rules. The written rules in the manual are still the final authority.