I mean, their goals seem very understandable given the current abysmal status of C++ (with regards to insane language complexity, historical cruft, and ergonomic issues like compile times and build systems). My only skepticism is that the thing they want might be better achieved by making a fork of C++, since there are just too many things to rip out of and replace. (Ideally something which can easily interoperate with existing C++ code, but make some huge breaking changes that simplifies and streamlines the language).