Yep, LVM is basically a software raid 0, I used it when setting up Linux server VMs for years at my last job, as far as I know they are still running fine.
The VM system backed up all VMs regularly, so I used LVMs as it made increasing the storage on a server easier for me.
Since it is just a raid 0 that can span several disks and one disk failiure can bring it down I don’t want any irriplacable data on it, so games from Steam seems like an excellwnt idea.
That also means that being able to just have a volume spanning several disks would be an easy and simple way to increase storage when space is running tight.
I am an avid hobby photographer and I would never trust an LVM without some kind of added protection, I am looking to get a Synology NAS with minimum of four drives raided in raid 5.
I have a very old Intel NAS with used drives that I used for many years, but I don’t trust it anymore, I keep it powered off as a cold backup.
If you are still using X, get Fluxbox, very lightweight, requires some config, but that is fairly easy.