The second negative result is perhaps even worse than the first.
In previous generations the child's personality and independence developed gradually, with emotions, opinions, outlook on life and aspirations ripening in due time. Starting with a clean slate, the child's pure soul absorbed whatever his teachers taught him, and whatever they impressed upon his soul. By the time the child started developing his own aspirations, his teachers had already inculcated him with a firm Torah foundation which served as a basis for furthering his positive spiritual growth.
This is not the case today, as the child's personality and independence burst out before he is ripe, leading to bitter and poisonous aspirations and outlook on life which he employs as he excitedly starts to explore the world around him (including things which he ought not explore). Under such circumstances, can we expect anything but noxious aspirations and outlook on life?