[mindcrime]

But they did say "many of them are idiots", which is similar

Similar, yes. But, at least to my mind, there's a pretty big jump from "many" to "most". But maybe that's just me. shrug

[xeromal]

Mot really, many still sounds like more than 50%. That's a huge claim

[blotter_paper]

Nope, we have a separate word for that: most.