... of course those don't necessitate infinite growth. It's not a necessary thing in the vast majority of situations. It's not a minimum-needs thing, it's a +1. Desirable, but incredibly rarely needed to actually accomplish whatever goals you might have.
As for it not meaning they want more stuff... maybe not necessarily, but if it's hard to figure out that positive change and variety (even if in limited areas) don't entail more stuff, I'm not really sure how to better frame the discussion to elucidate. Change is generally going to mean new stuff, even if not necessarily a net increase in total stuff owned, and variety is almost certainly going to mean either new stuff or more stuff. Either way, even if you're not looking at a total increase in personally owned stuff, you're definitely looking at a total increase in societal-level stuff. If your population is growing or stuff-supply deteriorating, that means more stuff. And digital media definitely takes up more resources than you're giving it credit, methinks. It's cheaper than physical media, usually, but it's still by no means inexpensive or an example of resource paucity, from what I understand.
... that said, at least from what I've seen on the ground you're definitely rather extremely anomalous, SG. Most people I've met actually kinda' do want that massive garage with cars for every occasion, and various equivalent things. The extent they "don't care" is actually equivalent to the extent they can't figure out how to get it, not a lack of desire. It's incredibly easy to get locked into that cycle of "More stuff == more better" when you have the resources to do so -- more cars, more clothes, more houses, more whatever.