--I read the same article last week...I agree w/ their theory--because they are trying to reach the 'masses'--most of the folks that don't pay as much attention to their equipment , as, say opposed to someone like your self.
I'm thinking the rules they posted are more like -say 'guidelines' to follow.
**Maybe you have a new piece of equipment, and you haven't serviced it yet--or you added to your fleet, and also extreme useage--like a lawn care company would do things differently than joe-neighbor.
--I always go by my hour meters on the tractors (Yes--I put one on everything)..or by months on the hand-held equipment. Write it down on a calendar hanging in the utility room. Go back and look at calendar at start of each month. I keep all the filters and oil I need in stock, pretty much, as I try to buy in quantity--and don't have to make so many one-off trips. I'll change mine as time goes--but I may be different than some--I put higher octane gas in my stuff, along with zoom or non-ethenol--and try to at least start it once a month in off season. Other stuff--I run gas dry.
And Try not to keep any gas past use date.
My feeling's being--if you keep up w/ the basic requirements year=round--it's no big deal at he end or beginning of season.
Hope this long-winded opinion gives some insight-I'm pretty picky about mechanical stuff--even though most of mine is old----
Oh--and definately clean everything before putting away--look at one of the lawn mower shops first warm week end in the spring--his place will be jammed up with machines that no one took care of--