Which part did I misunderstand?
Seems pretty damning if you ask me.
First thing you misunderstood is that, you thought, this Bangali is trying to give some Gayaan. Get over that - if little gayaan I might have, I at least won't waste it on bones.
2nd thing is, you have no idea of the purpose of "Emerging Quota" - it's NOT for developing players. No, 8 weeks PSL doesn't produce any talented player, neither develop any cricketer - no matter how talented he is. The only purpose of "Emerging Quota" is to give "exposure" of "potential" young player - who are not identified by PSL (better not be identified), rather giving an "exposure" to few talented players who had been performing at U13, U16, School & U19 level - in sports term, we call it "Fast Tracking". Here key word is exposure & fast track - it'll be foolish to think that Shadab Khan was plucked from streets by some genius & from one PSL he has become a star, now couple of more years in 8 weeks PSL will make him Richie Benaud.
That 23 years Cap is good for one purpose - it blocks players with influential contacts keeping their place in a squad. But, unless there is cap of appearance count (that's how many years one can be picked as Emerging - ideally should be once) - this will simply increase the average age of future emerging player.
I am trying for the last time, if you can see it - hypothetically, a club has 2 players aged, 20 & 21 as emerging this year. Both decent talent & they are retained for next year at 21 & 22 - slight improvement & they are retained for one more year, because that 23 years cap allows Clubs to do so. See it as a hypothetical chain effect - the kid, missing first time at 19, will miss again at 20, 21 & 22, until the senior of the 2 kids leaves at 23. If you replicate it into all 6 franchise, basically, it's shutting down anyone under 21-22, unless he is an exceptional talent. But, then the purpose of this "emerging quota" fails - because, an exceptional talent, by 20-21, should be identified regardless of PSL or not - if not, then God bless PAK Cricket.
That's why, without arguing for the sake of it, read my initial post - 1 or 2 new faces every year under "emerging quota" & at least 4 players U23 in playing XI. Ideally, some of this years' "Emerging" player should still make the team in U23 spots IF THEY ARE GOOD/POTENTIAL ENOUGH, but at a higher payment - at least Silver Category, while every year that "emerging" door is open for next prodigy. And, the guys who will be in trouble in this system are the MoHas & Misbahs & Maliks & Afridis - who are now competing for 7 spots, instead of 10 at the tender age of 40-45, that too at a premium price, in an young people's game.
In terms of average age, PAK National team is by far the oldest in world, FC teams are by far oldest & PSL franchise are by far the oldest as well - that too considering official age, and this'll only go south, if this emerging cap is set at 23 & then raised to 24, 25 ..... to accommodate players. With one new face every year AT LEAST & 4 in total under 23 in playing XI, will ensure that Franchise won't pay Diamond & Platinum to 40+ Buzurgs, who has very good contacts & "experience". AND it'll gradually pull down the age frequency to acceptable level, which should be polarized at around 25. Here key word is "frequency", not average - 44 years old Misbah, 40 years old Mohammand + 19 years old Shadab & 20 years old Talat makes the average 31, which isn't a disaster - but the average dispersion of 2 batch is 23 years

in a game,where career at top level is around 12 years.
Hope it makes sense, otherwise leave it here. I can't try better.