Having played with it a little bit since the update that fixed some of the reported issues we’ve seen, it seems impvoved. I have used it for multibooting live ISO images to try out various things.
Not sure I would count on it for an installation image, because if there were any potential malware or exploits in those binary blobs, that could end up causing problems with an installed system.
We all have our risk tolerances, and that’s fine.
But the way I see it, if you’re having a problem and you installed using Ventoy, then it’s perfectly valid to require testing without using it to see if the problem is reproducible. That narrows down where the issue is.
That is not unusual. I have setups that I help manage that use unsupported installations - and in order to manage those setups, I run a parallel installation that is supported as a sandbox environment; so if a problem comes up, I test to see if the supported installation method’s installation has the same issue - and if it does, then I can go to the upstream project and report the issue and get help.
But if it’s only in the installation that’s using the unsupported installation method, then I have to talk to those who built/installed the software in a way that the developers don’t support.
So, if you want to use Ventoy, just be aware that if you have a problem and it’s known that you used Ventoy to do the installation, you’re probably going to be asked to try installing without it and see if the problem can be reproduced - because if the issue is introduced through something that they do, there’s absolutely nothing that the openSUSE Project can do to address something in a binary blob provided by a third-party installation tool.
That should be a consideration for anyone looking to use this tool to install openSUSE. Do you want to be supportable, or do you want to have to reinstall without it to get help with issues that come up that are potentially related to the tool you used?
Which is going to be more (or less) convenient? Personally, I know which I’d consider to be less convenient.
Just remember that choices have consequences - so as long as you’re going in fully informed as to those consequences, as we say, “have a lot of fun”. 