I wouldn’t go that far. Asking about subtle differences may be a waste of time, but there are many who have no clue about oil and answering their questions can enlighten them in ways that can save their engines. I would not discourage anyone from asking.
Regarding the OP’s question, a look in his owner’s manual may even disclose 5W20 as an optional choice.
The difference between 5W20 and 5W30 is a slight difference in the amount of “viscosity modifiers” added to the base oil. “Viscosity” is a measurement of a fluids resistance to flow. Oil gets thinner, its viscosity drops, when it gets hot. Oil refiners add microscopic coiled polymers to the oil that expand (uncoil) when they heat up, counteracting the tendency of the oil to get thinner. The modifiers don’t lubricate as well as the oil, however, so the amount added is “just enough” and the difference in the base weight and the modified weight typically never exceeds 30. You’ll see “10W40” occasionally, but not often. 10W30, a variance of 20, is considered acceptable.
If you live in Nevada, New Mexico, or Arizona, I’d recommend changing it just to have as much of a “buffer” as possible. It gets doggoned hot there.
If you live in Montana or Oregon. you’ll be fine. It just doesn’t get that hot there.