Ok, let me throw out some actual statistics to give some solidity to this rampant speculation:
Number of Joyo kanji with kun-yomi: 1081
Number of kanji needed to read:
95% of a newspaper: 1050
95% of a magazine: 1350
99% of a newspaper: 1700
99% of a magazine: 2200
Number of phonetic compound characters in the toyo-kanji: 1211
Helpfulness of phonetic component in phonetic compound characters (toyo-kanji):
exactly the same: 57.6%
partly reliable: 32.7%
no help: 9.7%
Number of Joyo kanji with kun-yomi: 1081
Number of kanji needed to read:
95% of a newspaper: 1050
95% of a magazine: 1350
99% of a newspaper: 1700
99% of a magazine: 2200
Number of phonetic compound characters in the toyo-kanji: 1211
Helpfulness of phonetic component in phonetic compound characters (toyo-kanji):
exactly the same: 57.6%
partly reliable: 32.7%
no help: 9.7%
