Isn't winning the main objective in each game (while trying to have fun)?
So in winning (as the title states) does it matter how others played? If you won, wasn't the purpose accomplished? If you lost, who takes the blame, you, someone else (not including latency issues / connection issues)?
I do not care how you play but I will state that fighting someone who is good vs fighting someone who isn't makes the game boring and unimaginative. Win and fight the opposing team with everything you have, I mean how else do you expect to get better without trying everything, and losing everything?
I'd say that the folks calling you sad are just sad that you are getting better. I like watching those vides as well just because I find them informative and often entertaining. I don't have any trouble killing people but sometimes they do offer up something that I haven't already figured out and being a true warrior I'm not too proud to take good advice from wherever I can get it. If that makes me sad in someone's eyes I don't really care but I know whose going to be sad once the match is over and it isn't me.
I grew up on FPS, from the screen-peeking days of Frontline and Golden-Eye to the modern classics like CoD, Halo, and Battlefield I have a great deal of experience. I use to be the crazy run around and spray type but that never got me anywhere than the middle of the pack and the occassional 50-40.
Around the time of Black Ops I got organized with friends and we all developed niche, it was here that a learn slow and steady does win the race. I can score just as many objectives, get more kills, and die less times studying the enemy playstyle and countering than running around or sitting completely still.
Tactics are all about adapting