No excuse. Sony knows people want it,the competition been doing it(they been getting flak for not doing it) so let's not spin away what the majority of PS players want(according to polls)
It's not an excuse it's a reason, MS is still testing games too they just said that. The process isn't automatic, you still have to make sure each game works before you call it BC it's just part of the process. I've seen some people interpret this to mean that Sony is saying devs have to add PS5 specific features to these games which isn't anywhere in the article that I've read so I don't know where they are getting that, all it says is that all PS4 features have to work on PS5 as well. There is nothing to complain about here, this is them trying to ensure that newer games that they probably won't have time to test before launch work.