Anyone who wants to fix this can help fix it, but people are just making demands of an unpaid maintainer. The devs can run this project the way they want to. If you don't like it, don't use Ventoy.
The people comparing this to the xz exploit are out of line. xz was a library that was deeply embedded in a lot of software. Ventoy is an IT tool used to boot live OSes. Not even remotely the same attack surface.
Blobs in the source tree are not ideal, but people need to pick their battles.