I disagree. By transferring less funds, there are fewer bitcoins on the table to lose if they accidentally bork their transactions.
I'll show you an example I read years ago:
[...]
This example illustrates why it's paramount to empty a paper wallet completely, unless you know what you're doing. It depends on the wallet you're using what happens to your change, and that's not something to be left to chance.
To be honestly, you always need to know what you are doing.
You can either lose your coins through deleting the private key to the change address or by sending the coins to a wrong address (e.g. because of a clipping board changing malware).
Either way, you always need to know what you are doing. Especially if you aren't using a somewhat fool proof wallet.