I won’t comment on your opinion, it is yours of course, however, I’ll comment on the post-processing fx, because by default, FS2020 is already including post-processing effects.
These are similar to most one’s would use first with ReShade or similar, like sharpen or tone mapping. The later in this case is needed though because it is the only way to ‘compress’ the HDR into LDR for display purposes, but you might be wondering how much more than just tone mapping goes into the shader though (like some added vibrancy, etc…).
You can even actually disable some of them manually in editing the file where FS2020 is saving your graphics settings: