It's not 20 GB, it's 5.5, and I still think you can't damage your SSD even if you open the game 5 times a day. I got my 5-year-old render-video SSDs that got millions of files changed in time with %97% health. If you have less than 20 GB on your SSD, it's bad, but again, it's not that important either.As strong as SSDs are they're not meant to be written on continuously. The more is written the shorter the lifespan. So a 100GB game is fine if you install it and leave it, but writing 20GB every time you launch a game is not very consumer friendly. Also might explain a lot of bugs for people who might have smaller OS disks and maybe have <20GB free space.
A solution would be to write on the game's root folder, not in AppData, and advise players to install on a HDD. And artificially claim 20 extra GB on the root folder upon install/first launch, to reserve it for loading animations. This so that if players fill up their HDD to >90% and run the game, it doesn't unknowingly shorten their HDD's lifespan.
You just talk about some very old stuff about SSDs a decade ago. The time passed.
For example, if you use any RAM-heavy program, it always uses the disk for temp files. My Photoshop files create 30 to 60 GB temp files every time I open them, even though I have 64 GB of RAM. With this old info, every professional video editor or PS user should change their SSDs yearly.
No, ofc I won't advise using an HDD, this would be so stupid.
Even so, we will look for a better solution if there is one. It may not be good if you try to use a new version, but I am not a coder, so we will see.