It is a little odd that after a few years going for continental cheapos under the guise of "attractive, high-tempo football", the granddaddy of the Zeitgeist was available and ended up at flipping Leeds Leeds Leeds.
Home grown just means they were at an English club for 3 years before they were 21. So it doesn't imply any need to have a bunch of inadequate players from the youth team.
The mistake wasn't taking Ings off. Ings was poor yesterday.
The mistake was putting Austin on. Should have put Armstrong or JWP on and reinforced midfield.