Not at all. I had the same lineup in cash. TONS of people who I have no idea who they are had the same lineup. The Clippers/Suns game was VERY chalky, in fact I don’t think a guy I owned was less than 50% owned in cash games.
Click this link, the $5 big double up: https://www.fanduel.com/games/23711/contests/23711-216422071/entries/1412551725/scoring
That same lineup was right on the bubble and tons of people ended up on it.
There definitely is lineup selling, sharing, etc.. out there, but this one is not the case.