Yes, and making it unenforceable onchain (as dust outputs once again!). Some are critic regarding that choice.

However, accounting for such small amounts are really handy : for example for the fees. Fees are denominated in msat and most are below the thousand msat, without such an accounting system how could fees that low (or that precise !) be enforced ? Paying one whole sat but once each X forwarded payments ? That's not viable.

Secondly, we need to bear in mind that channels may be (some are already) used at a high frequency : 10 forwarded payments paying 100msat each can be enforced directly at the creation of the next commitment transactions (at least in the fees), and they don't originate from the same payer.

Thus, it might seem a bad idea to allow unenforceable amounts while giving the system a quick look but things are more complex and there are also benefits