Good points. The best should mean the lens which has best application for the type of photography one does.
For one mostly doing studio work where the studio dimensions are fixed, I think fixed lenses are as versatile as short zoom. For indoor photography, short tele zoom is out of question unless someone needs fractions of everyone's faces.
For weddings, sports, street events where access is restricted, car or motorcycle events, air shows, no question about it: short tele zoom is the way to go. Most wedding photographer actually shoot with two bodies and two type of lenses: 35 or 50mm primes for group and close shots or 24-70mm zoom, and 70-200mm zoom for distant shots, so there is place for both.
The answer to your question is based on what type of photography you do. If you can take all the shots you want to take with 70-200 and lower aperture than f/2.8 is not what you are after, no need to buy prime. If you need f/2 or f/1.6 for your portraits, have limited studio space, shoot lots indoors where space is limited, need the best bokeh you can get from a lens, then the f/1.4 and f/1.2 primes are way to go.
It's pity that most people don't spend time to consider their needs, sensor size, field or view they need, type of photography they plan to do or not do and rush chasing certain type of gear just because everyone else posts pictures of their latest gear trophy and they get so jealous that their senses are completely blocked out.
There is place for both primes and short zooms and that's why they continue to be manufactured. People buy them both although lately the zooms gain more popularity among starters as they are easy to handle.