The best divergent timeline explanation:

Cap goes back to Peggy, creating a divergent timeline.
In that divergent timeline, Tony Stark (or whoever) independently creates time travel.
As an old man, Cap uses that tech to time travel back to HIS past in the original timeline, popping in at the lake shore moments before his past self disappeared.

Quick search - Wikipedia says his cancer was misdiagnosed.  He had a more treatable form which they removed surgically after discovering the error. 

Did the same heroes die in the comics?  I’m curious if it was driven by too high priced talent or if the actors wanted out.

No, they didn't.  At least not in the original Infinity Gauntlet books.  The decision to write out these characters was entirely contract-based.

But hey - they've been doing this for 10+ years.  I can understand the actors wanting to pursue other opportunities.

You talking about the girl squad?  Or something else?

That was one of the dumbest episodes of the entire season.

You put a half a dozen people in a room, any room, that's sealed off from wind, and those people will be warm.  Even with no fire.  Even if it's 10 degrees outside.  You wouldn't even need to huddle up.  After a while you may even feel the need to crack a window.  So the idea that you'd need to rope-line through a storm to get to a house with a fireplace is just laughable.

People can survive for WEEKS without food.  So if you're caravan has one day of food left and you're sheltered and you're in the middle of a blizzard, you tighten your belts and ration.  Wait until the storm blows over.  If the roads are then impassable, you send out a small group to get supplies from the way station.  And you wait.  You don't venture out in the storm and abandon your horses (probably the most important asset you possess) just to try to get somewhere else.  That's just stupid.

And on top of it all, while we have everyone from Alexandria and the Kingdom FREEZING TO DEATH despite having shelter and blankets, somehow the Whispers who don't even have coats and are out in the open, are completely unaffected.  They even became "stronger."

I was pissed off through almost every minute of that finale.

From my conversations with people who were directly involved with this mess, Cunningham is a genuine sociopath.  They're pissed that this article portrays him with any sympathy.   He probably manipulated the authors to get favorable coverage in the same way he manipulated Sansweet and Wise to get access to their collections.

I think Ned's bones did.  Certainly not enough left over to raise.