With modern leather I absolutely find the Leather Conditioner to make a difference, adding protection and a nice look, and making it feel more supple despite the coating. Use it on the dash, door panels, etc, too, not just leather.
The Leather Conditioner is actually still available, it's been updated to a sprayable form. Personally, I love it and find it works well when compared to the original cream form. There is also a Leather and Interior Dressing that leaves a matte finish and no smell. Here's a link to each.
https://adamspolishes.com/collections/leather-conditioners-pastes-balms-revitalizers/products/adam-s-leather-interior-conditioner
https://adamspolishes.com/collections/leather-conditioners-pastes-balms-revitalizers/products/adams-leather-interior-dressing