As Ive shown many times - this is easily installed and done in linux.
I have yet to hear a linux user complain about needing to use the terminal to achieve this.
There is even a gui in linux for this:
I understand you are concerned with needing to use a terminal to type a single line of commands - but to say “there is no way to control the fans” is a blatant lie.
What you should say is “there is not a way to control the fans that I am willing to use”.
If you want to design a gui for fw-fanctl, you are more than welcome to do so. This is about freedom after all.