What are you giving up for RBs if not either other RBs or firsts? I don't totally get the statement.
I made this for our dynasty league, it's a visual of hits and busts with all our first rounders since 2013. Top row is all our 1.01's, bottom is all our 1.12's. After 1.03 you're getting porked most of the time.
So imho I don't see who on that KC roster is taking catches and carries from CEH right now. Maybe next year they go full Robinson/Etienne drama, but every back is vulnerable to that.
Usually, you won't draft a player better than CEH. CEH's issue is that people stupidly picked him at the 1.01 and that was a massive overeaction to the landing spot. But most years you won't draft a better RB than him with your pick.
Now can you get someone BETTER than CEH for the same 1st rounder + RB? Now we have a good convo. That's dependent on your league. I personally don't go trying to get CEH. I pay a bit more for someone better.