minimum 35 xp (to be able to attack a person with something that can do minimum 10 damage) looks ok to me for such power, so overpowered? I think not, and its the force, its a powerful feet and should be feared, to move and attack with magic
Actually, the attacking people thing really isnt the problem. The problem arises out of the mechanical interpretation of the move power, allowing someone to effectively move another person, or themselves, from short/engaged range out to extreme range with a single action, with no regard for any intervening obstacles. Someone who can move themselves that far that fast would be able to move themselves above them.
The answer from Sam Stewart doesnt really seem to take the actual rules and upgrades of the power into consideration, so perhaps we should interpret that answer as "only outside of combat, as a "story" mode thing, and always slowly regardless of upgrades"? Inside combat, with the rules as presented on the move power, "extreme" flight and move would be entirely possible, and very rapid.
As stated by others, moving yourself is force leap by Enhance. Otherwise, its the role of the GM to narrate how things are when its somewhat "outside of the rules". With appropriate upgrades one can move about anything. For example, if you are trying to keep something afloat, I would judge you need Magnitude upgrade or the upgrade about doing fine manipulation.