With adapting think of it like this, have you seen that thing where you have the colours written out but the colour of the word is different to the word itself? Eg "blue" written in red. Most people can adapt to read the colour of the word rather than the word itself but it takes time and you still can't do it as quickly as just reading the word. Likewise if there is a difference between how breakdowns are reffed in the Aviva and the Pro14/Top14 and European games then it's like asking the Pro14/Top14 to read the word and the Aviva clubs to say what colour the word is written in. You can adapt all you want but actions that require you to go against what is natural to you is more difficult than just doing what is natural.
So with English clubs competing less, would that be a cause of different breakdown attitudes or a symptom of it?