We get something like 8" of rain a year here - it's not a moist climate. I definitely wouldn't do this in Seattle. It's a common enough style of DIY step out here - if anything, mine are radically over-engineered compared to many I've seen.
The requirement is for a landing outside the door, with less than 7 3/4" drop. Which I meet. :)
I agree that a flat deck landing even with the house floor might be a bit nicer, and when I replace these, I'll probably do something like that. But that's a longer term project once we decide what to do.