“(dense product UI screenshots rendered at desktop resolution on mobile viewports)”
Retool's strength is showing complex, real UIs. On mobile, these screenshots become indecipherable thumbnails. Developers browsing on phones (Slack link, Hacker News thread) see blurred interface previews that communicate "this is complicated" instead of "this is powerful."
“Swap to a focused single-component screenshot on mobile (one data table, one form) with a "See full UI on desktop" link.”
Preserves the "real product" credibility with a legible subset. The desktop-full-UI story stays on desktop where it works.