Last week Exodus released a fix for their Desktop wallet creating Monero transactions with nonstandard fees, based on my discovery of the issue. Original announcement. Many users must have already updated their software because the number of these identifiable transactions on the blockchain have decreased from about 600 per day to 300 per day.

Yes, Exodus is a closed source wallet. I would not recommend people to use a closed source wallet. If people do choose to use Exodus despite it being closed source, then they should update to the latest version for better privacy. Monero users should have excellent privacy by default regardless of which wallet implementation they are using.