Of course it's ok! You do whatever you want. Though I'd like to clear up a couple of misconceptions:

I don’t want to deal with images. I don’t want to have to be cleaning the system from those images to reclaim my storage.

You don't have to, happens automatically.

I dislike flatpaks, snaps and appimage on which immutable distros rely.

Fair, though you don't have to use them at all - you could run everything in a distrobox.

The lack of customization as you can’t modify system files or install traditional packages outside the immutable framework, which limits personal tweaks.

This really depends on what system files you mean. Anything in /etc/? Fully writable. Everything is configurable either in your home directory or in /etc/, so I haven't run into any issues with not being able to modify something - and if you do run into that, you always have distrobox.

Apps availability, not all apps on the planet exist in flatpaks.

Don't need to, you have distrobox for that.

The learning curve.

That's fair. It's been very small for me, and the issues have helped me become a better Linux developer, but it does bring its own problems in some cases.

Having to change the way I interact with my computer completely, I’m too fucking lazy for that and way too cozy where I am.

That's the thing, I hear this a lot, and I just don't know what the big changes are. I installed Kinoite, set up a distrobox, and have been smooth sailing since - all my previous installations have had far more issues, and I just haven't really changed much (besides switching from Ubuntu to Fedora, but I'm happy about that, fuck Canonical).