Trying again, there's one point: What really made Figma successful is design moving from being made in "professional software" (like say Photoshop, Premiere, Visual Studio, Maya) to "collaboration software" (like Slack, Google Sheets), and that this was made possible because "flat design" is less technically demanding than the "skeumorphic" design it replaced.
(Sorry I wasn't clearer, I struggle on how to make points like this succinctly without is sounding a bit disjointed.)
