He starts saying DB abstraction layers are useless and he seem to conclude saying every abstraction and every library not written by you is pointless
this seem to me like "I'm paranoid about unknown code but I can't accept the truth SO I reinvent the wheel over and over again putting my code in my library and I say everyone this is cool cause it's faster and performance and bla bla blah"
the truth:
abstraction -> helps think about the logic that matters in your program
library -> helps not to reinvent the wheel and use code tested by everyone
his logic:
abstraction -> ZOMG unknown stuff HEEELP, let's think about every algorithm in my program from scratch and let's justify this to me by saying I'm saving 3-4 intermediate function calls
this seem to me like "I'm paranoid about unknown code but I can't accept the truth SO I reinvent the wheel over and over again putting my code in my library and I say everyone this is cool cause it's faster and performance and bla bla blah"
the truth: abstraction -> helps think about the logic that matters in your program library -> helps not to reinvent the wheel and use code tested by everyone
his logic: abstraction -> ZOMG unknown stuff HEEELP, let's think about every algorithm in my program from scratch and let's justify this to me by saying I'm saving 3-4 intermediate function calls