Not quite - Water flows through cells from low to high salinity as to try to reach equilibrium so as your salinity raises the flow of water slows and it can infact atop a plant from being able to drink and thus stop nutrient uptake all together.
A high salt solution or water being applied to the plant having a high EC will be taken up by the plant. But as evalotranspiration takes place over time the [salt] reaches “ infinity” and the tissues burns, yellows. It’s an osmosis thing. Equilibrium, I’m happy. A hypotonic solution and the cell draws in water. A hypertonic salt solution causes water to leave the plant, cells, roots to try to maintain equilibrium.
Like I’ve said container growing is tough.