The issue is still open. https://github.com/ventoy/Ventoy/issues/2795

The last comment has this:

I'm in a similar boat to you; whether the blobs constitute a security threat seems to still be up in the air. I read through the issue thread on github a few months back and it seemed the vast majority of the blobs were built by scripts contained in the repository, but some weren't documented well, leading to uncertainty.

The comment by Long0x0 on Aug 05 lists a lot of the blob files.

Looks like contributor is busy with work. Always the risk with open source. If things aren't raised in a reasonable manner, I can imagine the temptation is to follow it up with a middle finger.

Many seemed to care about it enough to bash it, but not enough to create and maintain a fork. They just want to boss it over the maintainer.

Not fixed yet. People either quit, let their threat model allow Ventoy's shellscripts to git-commit bins, or built it from source (i.e. PKGBUILD or ebuild).

I thought one of them did comment about it and it was something like the uefi drivers taken from Fedora or something.

Blobs aren’t really a concern as they reference the sources which produce the same binaries, but there are suspicions of compromise due to the Lemmy comments mentioned in the thread. The official accounts’ comments alleviate some of that, though.