It’s all a matter of degree

A method is not a sum of "tweaks"....

precisely - which is why the novice is best advised to purchase a set of about four or five top quality fuses as their system’s core, and then build carefully from this solid foundation, being careful to ensure that all subsequent purchases are rated accordingly.

Am I reading this correctly - Build a system around 4 or 5 fuses as your system's core? This takes precedence over matching speakers with amplification?  Maybe that's not what you meant.

The tweak is final ingredient added to recipe, just a pinch of whatever spice.

I’m quite happy with my system right now and haven’t made any changes in some time.I’ve done my share of tweaking over the years but found that most are short-lived and of little value. The things that have worked are based on solid engineering principles,

You know the job is done when you listen to the music instead of the equipment.

The tweaking process is the absolute heart of being an audiophile.  To me tweaking is paying attention to the details of your system and room setup.  If you adjust your loudspeaker/listener distance to the fraction of an inch, then you are tweaking.  Setting up a phono cartridge is tweaking.  Tweaking does not require purchasing products, but it does take time and effort.  If you don't tweak you ain't audiophilling.