You are correct in some ways. Younger officers do portray an egotistical attitude - yes. Not as a whole but any contact with police creates an opinion by the public, even if it's a one time incident. Respect should be given by the police as well until the situation necessitates action.
Ok, even 5 years ago tactical approach was different as police are ever learning and unfortunately the curve comes from fuck ups. Civil liability, political atmosphere, department protocol, all have influence on tactical implementation. I find it frustrating that the public slings an opinion on police action without ever walking the other side of the argument but I understand it - I was a civilian first.
Sure - peaceful talks with any suspect would suit the situation just fine. When do you change your actions and move? When you answer this question - in the fraction of a second, with the weight of the leering public eye, with the suspect, your own and your peers safety in question, and knowing that a lawyer is going to armchair quarterback everything you do from a safe desk, then you may change your opinions. I did.
Please don't generalize the police population. I firmly believe that an hour spent with me, drinking a beverage of your choice, would change your mind in many aspects. Oh, and I have been in it along time and treat everyone as I want my family treated should they encounter police.