It's not so easy to give things away at scale. If someone deposited 500 kilograms of assorted meat products outside your front door right now, with a note attached saying they need to be consumed or frozen in the next 24 hours or they'll go bad, how much work would it take for you to deal with that?

Clothing is of course a bit easier to deal with (it'll still grow mildew if you don't protect it from moisture!), but the source link explicitly anticipates there will be some circumstances where it's impossible to give away clothing and authorizes destruction in that case.