quintessence: the most perfect or typical example of a quality or class.
No, they are not the quintessence. They are relatively good and probably the best available.
I am not making that complaint at all. I have offered some constructive suggestions for improvement. I am complaining that the link is being given with no concession to the possibility that it may be too advanced for some of the people seeking help here.
I am assuming no rights. If anyone is assuming, it is you assuming that I am assuming.
If you have read the thread, you will know that I am not asking for help here, but I do think your attitude is wrong. Let me refer you to the Forum Rules here Forum Rules / Guide Lines and particularly the bit headed If you are a regular.