I didn't take it as throwing stones at original parts. More like they are decades old, unknown history, reliability can be in question due to age, possible abuse/neglect ect. And issues with the new parts obvious they don't fit and are unusable.
Sorry I don't agree.... This " and of questionable original design" doesn't sound like he's saying they are decades old, unknown history, reliability can be in question due to age, possible abuse/neglect ect