You seem to be more focused on the failings of pastors than your own failure at Christian giving. Since you hate the tithe, have you decided on a 50:50 split with God, or should you just give Him 90% and keep 10% for yourself? That sounds fair to me. And that would be more along the lines of the poor widow who was praised by Christ.
Maybe a closer look at the scripture is needed? In Mark prior to her casting in all Jesus is rebuking Pharisees for devouring widows houses, making long prayers for a pretence. Immediately he walks away from the temple and says it's all coming down.
Mark 13:2 KJV
And Jesus answering said unto him, Seest thou these great buildings? there shall not be left one stone upon another, that shall not be thrown down.
Simply back up a few verses
Mark 12:40,42 KJV
Which devour widows' houses, and for a pretence make long prayers: these shall receive greater damnation. [42] And there came a certain poor widow, and she threw in two mites, which make a farthing.
Now, move ahead 70 years and you get a snap shot of God rebuking the devourer mentioned in Malachi.
In my opinion He wasn't praising her, he was pitied her, for being dupped by the religious hypocrites.