TeamViewer's publicly-known business model has nothing to do with advertising or otherwise monetizing your private data, while Google's does. There's nothing inconsistent about using one while avoiding the other.

That said, I agree TeamViewer in a position to collect & monetize my usage by nature of being cloud-dependent & closed-source. I'd rather use an open-source self-hosted option. Haven't found a good one yet, but that doesn't mean we should ignore privacy hazards where they can be easily avoided.