For god's sake why don't engineers in opera fix the problem?

I went back to opera 12 . What scares is the sense that the opera is no longer the same, like the old versions that we have loved and used to. I really do not understand why the company made such an absurd decision. They just try to make opera resemble to Chrome. For god's sake, if somebody wants to use the Chrome features, let him/her to go and use Chrome.. Why are you guys making such an irritating and unnecessary change while everything was just perfect with old opera.. ???