That sounds like a good way for S&W to generate some added revenue.
Suit yourself. Free country.
While we've been told in various S&W armorer classes that the recommended spring replacement intervals are on the admittedly conservative side, because we're talking about duty/personal defense weapons, it's usually better to err on the conservative side of safety matters. Folks are certainly free to ignore recommendations of equipment manufacturers. Life is all about choices, after all.
For example, in the earlier days of the 3rd gen TDA guns, the armorer training went from examining "free" length of used recoil and mag springs, as well as considering live-fire functioning, to a new standard recommendation of spring replacement every 5,000rds fired or every 5 years of being in-service (mags left loaded).
Back then my agency wasn't interested in listening to the recommendation (since it's NOT a factory "mandate") to replace recoil/mag springs at the 5Krds/5yr point in our 9's due to the cost of replacing them in a few hundred guns. It wasn't until some feeding/functioning issues started to come along during range quals,
and pointing out that if ever called upon to testify in a survivor spouse's lawsuit that someone's weapon failed to function properly
due to a weakened/worn springs, we'd have to acknowledge that we'd asked for money to replace them at the service interval recommended by the factory, but had been denied. We got the money and new springs.
An armorer at another agency called and told me that he'd similarly been having no luck getting the money budgeted to replace the recoil/mag springs in their issued 4006's. They were at the 5yr mark, and had seen more rounds than 5K, but his agency wouldn't pay to re-spring their weapons as long as they were running normally.

The old, "why pay to fix it if it ain't broke?"
Well, it was a little over a year later, during some range quals, that a lot of their officers started experiencing feeding stoppages that were obviously related to weakened mag & recoil springs. Apparently, when it was pointed out to the folks who controlled the purse strings that they were lucky the weakened spring problems had
only -
thus far - occurred on the range, and not the street, he quickly got the money to re-spring their weapons.
Sometimes you may have to explain why wheels are still round, and what "penny-wise & pound foolish" means to some folks.
Now, slide mass and velocity, slide travel/run distance and caliber (power/recoil), as well as shooter grip stability, also have a part to play in the dance of recoil/mag spring replacement intervals.
Then, there's always the potential for some particular spring or RSA to have slipped out the manufacturer's door with an unrecognized materials or production defect, or tolerance issue, which might shorten the useful service life. That's why inspections between service intervals are still important (checking functioning every range session/cleaning).
Springs are pretty inexpensive insurance to help keep pistols running in optimal form. Or, as one well-respected armorer instructor for another brand of pistol likes to say in his classes ... "fresh springs help keeps guns alive". Some folks savvy in the shooting and firearms training circles tend to listen to what Dennis Tueller says about things once in a while.

(Another old time 1911 guy, BTW, when he's not wearing his Glock polo shirt.)