Not sure that the article is very accurate anyway -- at least WRT implants. I have implants and I explicitly asked my doctor about cigars and he said "no problem". And, it's true -- I had no problems.
If anything, the cigars made the whole experience go a little easier for me.
I waited a few days after the extraction to make sure that the socket sealed up OK (can't remember the exact number of days, but again, the I had talked with the doctor). I also waited a couple of days after they put the post in. But otherwise, I enjoyed my cigars.