I'm a little confused by the math everyone is doing here.

The assertion is with the lockouts it will take "longer" to gear multiple jobs on one character, but if you make multiple characters it'll take less time.

However , say I spent... 9 hrs a week getting all the myth and such for one character cause that's how long it takes (I have no clue cause I don 't really care) and it takes 5 months to gear all my jobs (again just spit balling here ...)
If I make a second character and we assume the 9 hrs is a just the constant amount of time it takes to complete the content... I now need to spend 18 hrs a week doing the content so in the end, while the number of months might go down I've now had to invest more actual time in game thus rendering the whole endeavor moot.