Based on this answer and your other answers, I have to think that you know neither Chinese nor Japanese at particularly high level of proficiency. Furthermore, your answers look like they are Wikipedia stock.
1. “all traditional Chinese characters...” — The vast majority of these are only used in classical literature or historical documents. Furthermore, multiple times throughout Japanese history, certain Chinese characters (usually similar) have been merged into one character. This is one reason Japanese characters often have multiple ways to pronounce them, while Chinese characters typically only have one.
2. Joyo kanji 1 — This is hardly the “bare minimum” for basic literacy for daily life (which is maybe half that). Japanese kids learn about 1000 kanji (kyouiku) in elementary school and about 1000 more (the remaining joyo) in junior high school. JHS is the end of compulsory education in Japan. Daily life kanji are more in the kyouiku kanji. The JHS has some practical kanji, but it gets bookish and sometimes a bit obscure very quickly.
3. Joyo kanji 2 - Note that government documents can only use joyo kanji. Maybe they can use furigana if necessary for non-joyo. As a default, most of the press only uses joyo, and they definitely use furigana liberally.
4. Joyo kanji 3 - Given that I have used joyo kanji at one time or another that most of my Japanese friends and acquaintances did not know, I think that calling this a “bare minimum” needed to be considered literate is a bit harsh. That said, I don’t recall ever having stumped academics, K-12 teachers, doctors, or lawyers on any joyo kanji. So if you want to call it a bare minimum to be considered highly educated, then I would agree.
5. Joyo kanji 4 - No Japanese person I know who pretty much caps out at joyo kanji uses a dictionary very often — perhaps as much as an American would looking up relatively uncommon Latin or Greek words/terms.
6. From my experience, you need about 5k characters to read a newspaper in Chinese (that was around what I learned), while the 2k joyo were complete fine for Japanese. While I did/do look up
words in both languages, they are either domain-specific words (where I often don’t know much about the domain in English, Chinese, or Japanese), or it is a scholarly flavor word. Note that I still look up words in English as well (thank you every George Will article ever).
I don’t have any links or sources readily available (I’m on my phone), but I am fairly certain that research on word and kanji frequency lists in these languages will support my numbers much more than they support yours.