Wow! Just glad that statement wasn't made in 1998/99 season!
Since then Blackpool / Huddersfield and Bournemouth have come from the 4th to the Prem, Brighton too and possibly Burnley. Wimbledon have had 8 promotions and are 2 away from the Prem.
Imagine yourself as a fan of one of those clubs that has just become a feeder for another team
yes teams have come up but gone down even faster and end up in a worst state and when your hand out stops from the premier league the clubs go pop and into administration the game is now only a top 8 teams in the premier league and how many will break into that in the next 5 to 10 years not many if any at all and the teams like stoke now know there bread and butter and don't even fight for anything other than 40 points and the money banked from sky
if newcastle and sunderland villa leeds both sheffield teams keep yoyo up and down the championship what chance have the teams like bury and oldham rochdale even getting in the 2nd tier league and stay there blackpool had money pumped into them and then look the 3 year parachute payments and now in shit and i see most other clubs like you said doing the same thing