That's one of those one-liners from way back, that disregards all variables about a situation...
My first command would have been on a sub 10.000kg, sub 20 pax turboprop that just about no one flies anymore, and that most employers don't seem to consider as valid experience at all. It would have gotten me nowhere soon, and I was making command decisions for a few years from the RH seat already due to severely subpar LH-seaters in my previous company (not implying I'm one of the skygods but these people were beyond belief).
Meanwhile, I will have the total time to be considered for LH seat within a year or so after switching to a jet, and have already been told that I will get the chance ASAP. Not spending that money before I have it in my pocket, but still... screw that old adage
. Times change and one-liners should not guide your decision IMHO.