I want to know the answer to the following question:
What was restricted?
All the background I'm provided with is that "These are simply guidelines, hence many characters outside these standards are still widely known and commonly used, especially those used for personal and place names (for the latter, see jinmeiyō kanji),[citation needed] as well as for some common words such as "dragon" (Japanese kana: たつ, Rōmaji: tatsu) in which both the shinjitai 竜 and the kyūjitai 龍 forms of the kanji are both acceptable and widely known amongst native Japanese speakers.". Is that enough to answer the question?
Answer: no