Excluding smart contracts is a dangerous approach that disenfranchises most users, and I will actively fight against it. Any address (msg.sender) that supplied assets or borrowed from the protocol is a user.
From day 0, Compound was designed as a protocol for developers to build interfaces and applications on top of. The interface built by Compound Labs was one of many ways to access Compound.
Tons of different users & wallets use Compound with a smart contract (Gnosis multi-sigs, InstaDapp, Argent, Dharma, etc). Rather than excluding smart contract users, and forcing applications to “whitelist” themselves, all addresses (msg.sender) should be included; excluding them is an arbitrary, political, and incorrect decision.