Humankind changed my mind about wanting a Neolithic period in Civ6, not simply because it was poorly implemented (as virtually everything was in HK), but because I can't really imagine a way for it to provide a better experience for the player. Civ already starts at the tail-end of the Neolithic and cities were already being established in the Neolithic so I think the current model is fine.
Let me tell you all a little Historical Story.
Several have posted that since Humankind's Neolithic Start sucked, Civ VII should not have a Neolithic Start.
In 1938, both the German and Soviet military staffs analyzed an attempt by the Italian forces in Spain to conduct a massed tank attack. It was a complete and utter fiasco. The Soviet staff concluded from this that Massed Tank Attacks Do Not Work, and went on to disband all of their large tank/mechanized formations in the following year - and then had to hurriedly re-establish large tank formations after German large tank formations overran France in 6 weeks.
Because the German staffs had analyzed the same battle in Spain, and concluded that Massed Tank Attacks
Conducted By Italians Do Not Work, but that had no effect on the German progress in forming and training Panzer Divisions.
You are, I am afraid, all conducting Soviet-style analysis of the Neolithic problem.
The real problem is, too much was happening before and during the period when the earliest cities were established, and by starting the game ONLY when everybody not only Can but Must establish a city, the entire early game is turned into a Fantasy and everything before the first Cities disappears.
That includes such hoary old Civ Tech favorites as Agriculture, Animal Husbandry/Domestication, Pottery, earliest Metallurgy (working Copper, Gold and Silver at least), earliest water crossing by at least Scouts and civilian units (i.e., settling on Islands and isolated land masses). It also includes, as we now know, Monument Bulding in both stone and wood.
Civ has always finessed this by having nominal 'monuments' as Goodie Huts scattered about the map and compressing all the technologies into the first Era - which, again, is Fantasy.
Now, most of us have nothing against Fantasy in games - it's practically inescapable, IMHO, but when you resort to Fantasy because you've simply bungled the design of the entire first part of the game, I submit that is lousy game design, not good fantasy game design.
The game can include very good Reasons to not found your first city right away, and a great deal of 'development' that you can accomplish, in scouting, exploiting resources and growing your Faction, before founding your first City.
The fact that Humankind's version of the Neolithic included virtually NO Tech development and minimal resource exploitation (no Trade, for instance, despite copious archeological evidence of it) is no reason to assume that Civ VII is required to make the same mistakes.