I can tell you how I know, I read, I have lds family who consider me “primitive” and tell me everything (they are all high mucky mucks), I have friends that tell me.
One of my lds uncles (a former bishop) did ask for proof of income, otherwise how would they know if the people were telling the truth.
An lds friend tells me she is billed by their bishop.
My lds cousin who left years ago, still has some lds person come to his door every year demanding his tithe.
Most lds people I know, actually do not know what the inner workings of mormonism.
Follow along there are many former lds on FR who can trace their roots to the beginning, they know what they are talking about.
Follow along there may be a million pages of information on mormonsim on the internet, with 90% coming straight from lds sources.......try and keep up.
You are assuming that your connections to the LDS church are better than mine and that you know our doctrine and workings better than I do.
As for your uncle, like I said, with a large enough group, you are bound to have somebody who does almost anything. Does the fact that some Evangelical minister molests boys prove that that is doctrine of the church? Of course it doesn’t. What about the speaker on a Christian radio station? Again, it doesn’t prove the doctrine or what he should be doing.
If there were any reference in the instruction manual to asking for tax returns, it would have been used against me.