"tinkerocracy" is probably an acceptable translation.
-cracy as in the ancient greek word that is used in democracy/meritocracy/...
In this specific context, I believe parent is hinting (in a negative way) about the internal culture of OVH that could be interpreted as not up to professional standards ?
"Bricolage", in a private context (typically DIY light home renovation) doesn't bear any negative connotations. In fact, several hardware store chains use the term (Mr. Bricolage, Brico Depot, Bricorama).
But using the term when describing a product or in a professional context is far more negative, often describing something which doesn't look well made or designed.