So reverse tithing which this church is engaging in - a form of it instructed in Deuteronomy 26:12 (these people were widows and poor people talked about in Deut. 26:12) probably did not give tithes in the first place - is displeasing to the Lord? Hardly...
Deuteronomy 26:12 (and tithing, etc.) is part of the Old Covenant, the Law of Moses. That covenant is no longer in effect.
In the New Covenant, God has given instructions to His church as to how it is to spend its money. (In 1 Timothy 5, for instance.)
So although we may come up with an idea that sounds great to us, God’s ideas are better. And it’s important is for us to obey Him.