Millennial here. I’ve been consuming Reddit, and now Lemmy, almost exclusively on my phone and for me it’s card view all the way. Often the graphic content is more important than the title and opening posts only to find out it’s not funny or interesting feels like a waste of time. Only when I find a post interesting enough that I want to comment or see the comments, I open it. Instances or communities that I don’t like go on the blocklist.
If I really need to use Reddit, I open old Reddit in the browser with an extension that turns it into a mobile friendly site with card view. The new design has always felt sluggish and bloated to me, but not because of the card view.
I’ve been using it for the past 4 years and it has been rock solid for me. I use the oisd list with some of the overlapping security lists disabled and it just works. I never get complaints from family members either. It’s enabled on my home network, iOS/MacOS/Linux devices and in Tailscale.