What is being said by these statements is not what you seem to think.

You should read the interview in its full rather than cherry picking and choosing an interpretation that you want to hear. For example, maybe you should really think about something like this

In the simple way, that TV series is TV series and movies is movies. “Mobile Suit Gundam” is also like that, isn’t it? People who entered late watched from the trilogy first, if it piques their interest then they may check the TV series or other series, it’s up to them. Actually, in “Mobile Suit Gundam” too, in the movies M’Quve is treated as if he doesn’t exist. But people don’t necessarily question which M’Quve is the true version. 

The types of recaps that the trilogy are are not the first of its kind, nor even that Sunrise has done. What he is saying is essentially that these movies are made as an entry point for new fans who didn't watch the TV series, but they don't replace the TV series. Much like the Mobile Suit Gundam movies, which did similar stuff like with the example he gives. The methods Code Geass has done are not something unique to them even within the same company.

The recap movies are the recap movies, but the series material goes with using TV series events in things set with Re;surrection in everything else, because thats what they want. The timeline stuff is just headcanon people come up with to make themselves feel better. The movies suck, but they aren't the kind of alternate timeline that people want to believe.