Then again, LP cylinders are regularly pumped to 3600psi or more in some parts of the country, and there certainly isn't an epidemic of cylinders exploding left and right.
I am sorry to report that a lot of places in Central Florida that used to fill LP's to 3500 won't any more. There weren't many in South Florida that did that, anyhow. I liked my LP95 when it was filled up to 122 cu.ft. It became less likable when I could not get it overfilled, so I sold it.
Buying LP tanks in anticipation of easily getting overfills may lead to disappointment. Take it from me.