This one is interesting as we have both. Really, we just keep leaning into what is working and try to have the product do as much heavy lifting as possible. At the same time making sure our sales team gets the right incentives/credit for the hard work that they do. We’re working on better incentives/credit for our CS team on the retention + adoption side.
Both our sales team and CS teams take up most of the oxygen, but we still keep investing in the product to do more for itself.
IMHO you have to figure out how much human-led vs product-led efforts you need for your product and market. We track it and make sure we know how customers want it but also balanced with what is most effective for us as a business. It also changes over-time and the scale slides more to product-led over time.