Speaking in church is about edification of the body. To be edified we must have both love and truth.
You see love needs truth and truth needs love to be edifying. What is false rarely serves as loving in the long term.
The church is called to unity and truth. The two can only be found together in wisdom. You see a great balance is needed.
The principles fit together perfectly but in a fallen world it takes great wisdom to discern the right balance. You see truth at all costs is not Christian but neither unity at all costs.
As Ecclesiastes says there is a time for everything under the sun. A time for peace and a time for war. Of course it is wisdom given from God through the Spirit that shows the difference.