Hi everybody!
It think it is part intentional, and part unintentional, but the Japanese language is becoming simplified over the years, especially when it comes to the topic of eliminating kanji. Thank God!
Years ago I wrote a book in Japanese, and I made the (beginner's?) mistake of squeezing every kanji in there that I could. You should have heard the complaints! The one that immediately comes to mind is kega suru, or to be injured. I was scolded, and told to NEVER write that in kanji, but only in hiragana. Most of my readers could not read the kanji for kega suru. I was shocked!
All in all, I think that the slow removal of kanji over the years is a good thing.
(Oh, yeah, everybody who could not read "kega suru" in kanji at that time were Japanese football players....)
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How many people out there know the kanji for doko, koko, kore, naze, dore, etc?