I'm too old for those kinds of parties now, but when I was younger, yes, you could find anything under the sun. Admittedly, crack was a rarity, but coke would be around, E would be around, K, acid, etc, etc. Damn near anything you wanted, but the big H. Never saw any of that shit.
People do drugs, and get wasted. Now, should Ford have known better? Yes. However, I'm not gonna demonize the guy, and judge his entire being for getting wasted at some party. If the dude was a true blue crackhead, he was the most functional crackhead I ever saw.