I particularly liked this excerpt:
Gaku Homma wrote:
There are not ANY Aikido techniques that truly, physically force a person to fly into a break roll, even without any resistance. The true reality is that ukemi in our Aikido practice is a partnership.
EDIT: As for suwariwaza, what I took from the article wasn't to stop doing it. Rather to understand that it requires some body conditioning before attempting it. Suwariwaza is not that conditioning, either. Everything in moderation.