I don't buy the conspiracy theory argument that an aftermarket spring company such as Wolff only exists to separate people from their money, that's a ludicrous assertion.
However
Yes, for certain, using a lower weight hammer spring (main spring) will definitely give two immediate results: it will lower the pull weight of the long double action trigger stroke -AND- it will lower the amount of energy impacting the primer, which absolutely gives you the chance of a "fail to fire."
Consider how affordable these main springs are and how easy they are to swap. Consider the actual role/use of the ten 3rd Gens you are talking about. If these are simply range fun guns where a shot won't ever be life & death critical, you might enjoy the upgrade.
Myself, I have even more 1-2-3rd Gens then you do and only one of them is in a defensive role. However, I haven't bothered with the mainspring simply because I don't do much double action shooting with them.
The reduced long trigger pull feel with a lightened main spring is definitely real and perceptible, and certainly could be a low cost and enjoyable upgrade for you. And that cannot be written off with a simple "these only exist to separate people from their money", which is nonsense.
Apologies if that seems caustic but it's simply slagging a quality product that has definite tangible use.