The last time I looked at the US-05 product information sheet, they seemed to be comfortable with either pitching dry or reyhdrating - as they offer instructions for both techniques. There's a S-04 product information sheet from about 15 years ago in the "internet archives" that says pretty much the same thing (link available upon request).
So, with two data points, I'm willing to suggest that Fermentis, via their product information sheets, has been comfortable with either technique for over 15 years.
Some day, maybe the "consensus" of home brewers in forums will reach a similar comfort level.