The thing is, Figma's commenting system is absolute crap compared to InVision. I get tremendous value from InVision just as a means to share designs with stakeholders and clients and gather feedback all in one place. It's a nightmare trying to do the same thing in Figma. I actually export Figma screens into InVision to do this.
When Figma's commenting becomes as good as inVision's, InVision will be truly dead.