I just complie from source some lightweight programs that are too niche for repositories. I am in no way advocating for full source compilation of every program in your system, that’s a security and usage nightmare. Flatpack does have its use for sandboxing an environment. I personally use it for windows applications in bottles.
None of the packages I compile from source are essential to my working system. I have a private chatbot to test, some emulators and dsda-doom.
Every one of those programs can be one or two versions obsolete and it won’t make a difference.