I've stopped presenting Figma mocks when I can help it. Instead, I build the thing and send a link. "Here, click around. Try it on your phone. Break it."
The feedback you get from a live prototype versus a static mockup is night and day. With a mock, people comment on colors and fonts. With a working URL, they actually use it. They find the real problems, the ones you'd never catch in a flat file. The flow that makes sense visually but feels weird when you actually click through it. The interaction that works on desktop but falls apart on mobile.
AI made this approach realistic for a solo designer. I can go from concept to deployed prototype in a day. That used to require a designer and a developer and a week of back-and-forth. Now it's just me and a few tools. The fidelity of the conversation goes up because everyone's reacting to something real instead of something imagined.