How much "effort" is too much? Too much to bother with.
Not everyone is as hardcore and dedicated a player as yourself.
I'm not hardcore, I'm not dedicated. Assuming so is displaying your brazen idiocy and overwhelming ignorance, as well as sidestepping the issue by calling into contention my playstyle, or amount of time played, when neither has anything to do with the crux of the issue.
As a newcomer, while you are grinding old raids, the rest of your guild progresses. It will take ages to catch up, even with them helping you - which BTW isn't all that fun for them; gear-up runs tend to have attendance problems.
And? I started playing the week before BT was released- I still saw Sunwell before Wrath. I raided with a family oriented casual guild the majority of that expansion, so I wasn't raiding 4 days a week or progressing 24/7. I exerted the amount of effort that was required to advance, [iso I caught up[/i].
If it was that "easy", Blizzard wouldn't have resorted to giving out tier gear via JP. Blizzard wouldn't have spend resources making heroics that "causally" drop epics.
There really isn't much difference between an ilvl 200 that is blue or purple, such as those in wrath. Tier gier is no longer bought with JP, as we're back to linear progression and not the failed dungeon resets that have gone the way of obsolence much like rep tabards.
Some people take breaks from the game due to Real Life issues and they entered the expansion late. Or they only recently join the guild coming from a guild that didn't work out and never got anything done.
Does that mean they should never get to play with the rest of the guild? If this is so, they will just quit, no one likes being left behind indefinitely, and that's bad for business.
I entered late. Some of my guildies have switched their mains several times. They're still on the same footing I am, or those who I caught up to are- they exerted that effort required. They didn't sit around, their thumb up their !@#, complaining about the minimal distance everyone else was ahead of them, waiting for a gear reset.
They, and I, did the content, caught up, did the content, and progressed.
The same as people have done every previous expansion, usually without resorting to using the gear resets from catch-up heroics.
If you're impatient and expect to jump from heroics to killing bosses in the third tier of an expansion instantly, without being carried hard (which means everyone else present overgears the encounter), well, how did you get into rpgs, much less mmos to begin with? Something like CoD where you can camp a spawn point or hide in the corner while your team does all the work sounds more up your alley.
PUGs? What do you think LFR is?
Lemme guess, you're one of those people that thinks because someone isn't raiding with people they've known for a decade, their ability to play magically vanishes, they suck, the content becomes obscenely difficult despite remaining the same, and everything takes fourteen times longer.
Pugging a normal mode is no different than doing it with your guild. If the elements themselves are weak, failure will be more likely. If they are strong, then the lack or presence of a bond is irrelevant. It becomes simple mathematics as to whether the encounter will be defeated or not.