وَإِيَّاكَ نَسْتَعِينُ
And You alone we ask for help.
The context is direct devotion to Allah. The clause reserves ultimate dependence and aid-seeking in this act of worship for Him, but the syntax by itself cannot settle the separate legal question of permissible practical help among people.
When identifying qasr, ask what is being restricted to what and in which discourse. Turning a focused rhetorical claim into an unrestricted legal generalisation is a methodological error.