Every single program on your PC will write data to the disk, Launchbox is not a special use case in that regard. I'm betting if you have a SSD in your system you are running Windows from it right? That will be writing and reading from your precious SSD every second of every day that your PC is on, but i don't expect you have been to the Microsoft support site asking them to release a build of Windows that never writes to your drives, right? That would be a ridiculous thing to ask for right? Why should Launchbox be any different?
Then maybe you should just be loading your games from the desktop and not using a frontend at all. The point of a frontend is to organise and display your games in a attractive and organised way, to enable you to quickly choose a game and launch it. Having screenshots and videos of the games in your collection is a good and attractive way to organise and see what a game is about before loading it, this is EXACTLY the use case for a frontend.
This would mean a complete redesign and re-code of the program in order to support your frankly weird phobia of programs making use of the SSD you have.
The only way you are going to be able to save your precious SSD is to not use a frontend at all and to simply load a game from the desktop, while the whole time Windows is reading a writing thousands of files every minute.