The guy is trying to address the issue and he is building this in his free time. Give him some credit at least, I am sure this is consuming a lot of his free time.
Fam, you've chosen to trust them for reasons that are unclear to me. Honestly, I don't see anything (yet) that would clear their name. For all we know, they could have ties to some intelligence agency; which the infamous Jia Tan has (retroactively) been accused of as well.
I personally find this Ventoy an amazing piece of software
That's not the issue. I've also made plenty use of it in the past. But at what point do you start to second guess the intent behind the maintainer?
he also seems to be willing to address the issue and be more transparent in the future which is also commendable.
Again, arguably too little too late. They literally ghosted the issue for over a year. Then, within 24 hours of possible proof of malicious code, they appear and (perhaps) "pose the image" of putting in a gargantuan effort to resolve the issue. But, like, where were they for a year? Furthermore, the hints of justifications for their actions are simply not up too par.
Don't get me wrong. As I clearly hinted at it in my previous comment, if they pull through and provide/produce (bit-by-bit) reproducible builds of Ventoy^[Another spoiler-alert: They admitted that it would be hard. Which is fine, but could be interpreted as the first action for an eventual cop out. Only time will tell...], then I obviously have no qualms against them or their software. Why would I? But until then, I will steer clear.
What should have happened for you to be more concerned?