Somewhat flawed argument - if you have two routes, the easy and the difficult and they both end up in the same destination (LFR ilvl gear) then what route *other* players take doesn't diminish *your* enjoyment at all.
So feel free to take the more difficult route - share it with other likeminded people and enjoy the damn game.
If others take the LFR route, then more power to them, but it doesn't take *anything* away from your enjoyment of running really fucking hard dungeons.
The fact that you want to boast about pre-raid level gear in front of some casual LFR players makes it seem like you're trying a bit too hard to be a wannabe elite but can't quite cut it. Feel free to taunt everyone once you stand in front of the AH in your Mythical Tier set though.