I find that many Linux users have a misconception about immutable distributions without knowing what it actually is. There is a lot of misinformation and generalization in the Internet about immutable distributions being “locked down”, “inflexible”, etc., when we could argue the same with many traditional distributions. In this article, we’ll look at what makes an immutable distribution, the concept of an immutable distribution versus implementations, misconceptions about immutable distributions (both pro and con), and why they exist in the first place.
Yes I did, the article is very well written and effectively debunks a lot of misconceptions however those distros are still an unnecessary extra step that don't provide a sufficient gain / improvement over "mutable" distributions and/or properly done setups.
"just different" is by definition "more complicated" as most people going on the "immutable" hype will have to change entire workflows and tech stacks to end up gaining nothing. Moreover immutable distributions (or the majority / most popular of them) will simply add a ton of extra engineering hours and you can't debug/fix things as quickly as you would otherwise will.
As the article said security isn't even a valid argument for immutable distros and I'll give you even more reasons. Properly done setups run on container technologies that allow for a more decent way of immutability - typically snapshots. If you're going bare metal then use ZFS / BTRFS instead of the Ext4 crap and will also be provided you with that. Snapshots can be easily made automatically on schedule, manually, moved between systems etc. and won't get in the way of your developers.
True, but this hype is much like Docker and it will invariably and inevitably lead people down a path that will then require some proprietary solution or dependency somewhere that is only required because the "new" technology itself alone doesn't deliver as others did in the past.
As with CentOS's fiasco or Docker it doesn't really matter if there are truly open-source and open ecosystems of immutable distributions because in the end people/companies will pick the proprietary / closed option just because "it's easier to use" or some other specific thing that will be good on the short term and very bad on the long term. This happened with CentOS vs Debian is currently unfolding with Docker vs LXC/RKT and will happen with Ubuntu vs Debian for all those who moved from CentOS to Ubuntu.
We had good examples of immutable distributions and architectures before as any MIPS router and/or IOT device is usually immutable and there are also reasons why people are moving away from those towards more mutable ARM architectures.
We don't need to see the future to understand what immutable OSes bring to the table - we just have to look at the shit show that was made around MIPS.