Yes they are hurt. The new expertise feats kick in at 11th and 21st, the old ones at 15th and 25th. So for 40% of Paragon and 40% of Epic (or 8 out of a possible 30 game levels, or just over 25% of your career) they'll be at +1 to hit on top of their other benefits. I'd say they're hurt, but that's just me.
No, they're not hurt. They are no worse off than they were before the new expertise feats.
Being relatively less well off does not mean they are hurt.
Adam and Ben like watching HD-DVDs, but do not have plasma TVs. Adam buys a plasma TV. Ben is not hurt by Adam's purchase. Ben might be annoyed that Adam now has relative advantage in watching HD-DVDs, but Ben is in no worse position than he was before Adam bought his plasma TV.
It's the whole "keeping up with the Joneses" envy thing.
Cheers, Al'Kelhar