TCC is already in newer version here then on TUXEDO OS, ironically. However, it’s still not updated to work fully with Siurius.
As to clean install, it’s never as easy. I have tons of installed packages, so installing it anew would be a huge chore. Then and only then, I could retrieve my home files, and it must be done outside the system, otherwise some configs are overwritten. Then, there are small configuration changes in configs on root, the ones that have no copy on user side, because those work from root anyway. I do compare pacnew with the current configs thanks to pacnew-chaser and meld, so I see, that configs are fairly default, but some small options are enabled - those have no big impact, but are small customizations within the config range (so no extra files and settings).
And oh, there are some extra files like grub background and printer drivers that were installed from AUR many years ago and are not available anymore. I would have to track them down on the disc and copy manually back, because there is no way I could get them back, aside tinkering with deb.
This is all doable, but incredibly tedious thing to do. Moreover, in my experience, after such daunting work, some things still don’t work as good as they should.
Because I didn’t want to pollute the system with old configs, I tried to set things as I want again, but to make some things happen, I had to look at my old notices to find out, how I did it and why. This was another chore, a very irritating one. It would take many weeks to recreate things as I want, so I just gave up and copied my configs.
So the new, theoretically clean installation is not really clean, because of copying of the configs and is inferior, because some things don’t work exactly as they should, and you have another task of debuggung it.
For example, on my old Alienware, on clean Manjaro install multimonitor doesn’t work, period. No matter what I did, how hard tried to restore my settings, it would never budge. No HDMI signal. On my old system, ALL WORKS! Imagine that. I lost a week restoring my system on a clean install and in the end, I had to replace it with the old one anyway,
Clean installs are a myth. I mean, if you are really new and star from scratch, then yes. After using Manjaro for 10 years, I want my system, not a default one. Besides, I never learn anything if I clean install every time I came across any mysterious issue. There is a reason why my Manjaro install is over 9,5 year old. I solved the problems instead of starting things over.
There is also no guarantee that clean install will fix it. I’ll install Manjaro on USB and will try to do suspend test from there, but that may be problematic, because powering USBs is a different thing as internal discs, so it’s not as good test as having it on bare metal. Another thing I can test is to create some small partition for another Manjaro install, but that could lead to some confusions, so that’s risky too.
There are tons of logs in the system, so if there are issues, you can find them somehow, given the right time and knowledge. Time and knowledge is a bit of a problem here.