[todayispotato]

They will probably not be an extremely deep expert into specific technologies, and they will burn out on doing work that does not involve improving the product for actual users.

They want to deliver a feature, and sure they want to make sure it's being used well, but they won't want to stick around to endlessly tweak it.

[nevertoolate]

I don't necessarily agree. Being a responsible product person both means tweaking good features, sunsetting bad features and introducing new ones.