Comment by zdragnar

Visual design, interactive design and information architecture are all lumped together under UX, but there's little call for going back to first principles when you have an established design system.

When you do, you end up with prototypes that are disconnected from what exists, and don't look good when you actually start using the existing visual design system. That's where all the one-off tweaks start coming in.

Unless the business is willing to pay for research into a holistic change to the semantics of the existing design system, Figma is perfectly suitable for the majority of design work once a cohesive design language has been put together.