Live synchronization of layout and schematic files is a feature you find in EAGLE, but in almost no other EDA program.
If you say KiCAD is not an professional EDA due to missing live synchronization, the same argument applies also to Altium, Cadence Allegro, and most other EDA systems which are considered as professional by most people.
Those numbers are likely biased toward hobby electronic designers located in Europe and USA. It would be interesting to see the numbers from manufactures with different target audiences.
And the latest moves from Altium will promote growth in the professional market.