I don’t think that addresses their issue with Ventoy, since this looks to just be a frontend over Ventoy. From the website you linked:
“YUMI exFAT utilizes a bootloader based on Ventoy2Disk along with a custom YUMI theme and configuration enabling you to use advanced Ventoy boot methods with YUMI’s helpful front end.”
I don’t think that addresses their issue with Ventoy, since this looks to just be a frontend over Ventoy. From the website you linked: “YUMI exFAT utilizes a bootloader based on Ventoy2Disk along with a custom YUMI theme and configuration enabling you to use advanced Ventoy boot methods with YUMI’s helpful front end.”