I guess it all depends on perspective.
I love that it’s free compared to those $10-20k licenses for similar systems.
I love that there are good package managers.
I love that it’s open source.
I hate that it’s GPLv2.
I hate how bloated the kernel is. I’d like it to fit into main memory.
I hate how it’s not POSIX-certified.
I’d only use zram if I had no swap device/file.
In my experience zswap performs better, and doesn’t get in the way of hibernation. In fact, most distros enable it by default today, and it doesn’t always work so great with zram.