I think it's more likely than not that they make the playoffs but I don't know that I'd go so far to say "easily".
PG Curry
SG Russell
SF McKinnie or Robinson III
PF Green
C Looney
That lineup is not going to strike fear in opponents. Off the bench would be Burks, WCS, whoever doesn't start out of McKinnie and Robinson and a collection of very young and unproven guys like Smailagic, Paschall, Spellman, Evans, & Poole.
Klay Thompson is very tough and I wouldn't be surprised to see him return early. But until he does the defense is going to suffer, since outside of Draymond (and maybe Looney) they are not a good defensive team with an unproven/weak bench.
Curry will likely have another MVP caliber season (maybe even the best of his career in terms of stats) but if he misses any significant time the Warriors will likely struggle mightily. If they stay healthy the Curry/Russell backcourt should put up a ton of points. But while I'd say that pairing has an edge over Lillard and McCollum, I'm not sure that overall that team (without Klay at least) is better than Portland, who I think are far from a lock to make the playoffs again after they lost some pieces. In my mind it really comes back to when Klay returns and how effective he is once he's back on the court.