The lot of (partially scary) binary blobs is still an unsolved issue: https://github.com/ventoy/Ventoy/issues/3224
replies(5):
"I have updated a new 1.0.21 release and removed the unused sig driver file. And I also add a README document about the httpdisk driver https://github.com/ventoy/PXE/tree/master"
As in the author responded and removed this and explained why it was in there in the first place.
So Ventoy has all it's code audited and documents every case of a binary blob with the source code and instructions to build the binary blob. iVentoy above did have an issue which was promptly resolved.
It seems to be an extremely trustworthy project. If you want to blacklist them because they once had an issue since corrected fine but it seems waaaaaay over the top to me.