First off, I'm sorry to hear you've had a negative experience with one of our products, but I have to say this is highly unusual to hear about with Gold Class Leather product of any kind. But I think I know what's going on here and how to correct the issue.
There is no "damage" to the leather at all, it's merely product residue. And if you used 3 wipes to do just the two front seats and the back seat, I'm thinking you actually used too much product which resulted in the overly glossy look you've gotten. To add to that, the other product you used subsequent to the wipes has only exacerbated the issue.
The good news is, clean up should be very straight forward. If you're reluctant to use your steamer, you shouldn't be. If used properly it won't harm the leather in the slightest. Even so, you should not have to use it to remove the excess residue of the product you now have on the surface. The Gold Class is water based (can't say for certain about the other product as it's not ours) so you can easily remove the excess by simply soaking a large, clean cotton towel in very warm (not hot) water, wringing it out, and wiping the seats down. Repeat if needed, but a good warm water wipe down should remove everything.
In future, it's important to minimize the use of any product, not just this one. And if you ever do see more gloss than you like, a quick wipe down with a clean microfiber towel almost always does the trick, regardless of the product used.
As a personal side note, I'm not generally a big fan of any sort of wipes as they tend to deliver more than I like on initial contact with the surface. I prefer to meter out my product and therefore prefer a lotion or spray product for interior use, but I always apply to an applicator pad first rather than directly to the interior surface. And for the record, I've been using a variety of our Gold Class Leather products for a decade on my daily driver, with zero ill effects. Same thing on my weekend toy (though that's only been 6 years).
So, why do even make wipes for various products? The general consuming public loves them and buys them in very large quantities. Simple as that.