FUTO is source available, so in terms of safety it is just as good as FOSS. All the voice to text is done locally. I use the FUTO keyboard and Grayjay and they’re both amazing. Don’t get too hung up on their license. It prevents other businesses from taking their source code and taking over the space with a for profit application. It is 99% as good as FOSS.
LMMS doesn’t seem to pack the samples and soundfonts into the project file when you import, so you’re live referencing them in your folders, which means renaming the folders will break the links. I also learned this the hard way, and now tend to copy soundfonts I use into the project folder of each project, so if I need to move or send over files to someone else, I can copy the folder without breaking anything.