Honestly the way I always look at it is just take the lifetime cost and divide it by the yearly cost and if I think the product/license deal will exist for that long (and I’ll use it for that long) it’s worth it otherwise not. Like, I have lifetime Plex and frankly I don’t expect the, to exist forever but I like the premium features and I’ve had lifetime for long enough that I’ve saved money.
Not mine but my partner’s machine (which I build and largely maintain for her) is a custom Debian install on ZFS root using ZFS boot menu and running a custom minimal i3 desktop environment.
Another option is to avoid the installer entirely and install from a live environment using chroot and whatever your distro’s installation bootstrap tool is. I started using this method to install Debian on ZFS root using this method for a while and it’s become my go-to method for installing most distros as it gives you the most control over the resulting OS. It will also often take some distro-specific knowledge but is also a valuable learning opportunity.
Stealing other people’s cultural heritage is their cultural heritage