In short, no. While I agree that the show has shifted dramatically in theme and tone, it is still capable, at times, to invoke the same feelings and resemble the show of S1-3A.
There have been several writing staff changes over the years, but A and E as show runners dictate how the show is written and what messages are communicated. Since they are still around, the only thing that has changed are the messages they wish to communicate.
[adrotate group="5"]
"He was a lot of things to me" "The only conclusion was love"