Sparrow wallet and Whirlpool-cli do not use tor connection management interface.
Where did you get this information from? Sparrow does have a Tor connection management interface, it's bottom left when you're into whirlpool:
Coinjoin users should never connect with their real IP address-- always through Tor. It doesn't make sense to doubt the blindness.
Using a "Tor proxy" and using "Tor settings management interface", which allows you to manage Tor connections, are two very different things.
Sparrow allows you to use a tor proxy, but the output node address will not change as this is necessary for Chaumian protocol to work.
Sparrow does not use the Tor connection management interface.
When mixing, you will send your input and output addresses from the same tor node (same ip).
There is some chance that one of the participants in the mix will also use the same tor node, but the chance is not very big.
same with whirlpool-cli