There's another thing to consider.
Despite having "charity status", the Org has long disdained actual charity work like soup kitchens, clothing drives, and the like (too little chance of return on the investment, i.e. new recruits)...
...instead, it's used the preaching work as its defining characteristic to - arguably - qualify for its tax-exemption.
And I've long suspected that the rank-and-file's door-to-door records are the documentation that it keeps to provide "proof", should they ever get audited by any given federal revenue agency.
However, phone witnessing and letter-writing might be a little more difficult with regards to that aspect, though, since it's far more "honor-system"-based than actual, tangible, visible door-to-door/trolley/park-table evangelism that the public actually sees...
...and since I suspect that the Org is starting to feel anxious about losing its tax-exemption*, how will that translate?
*After all, they were one of the very first evangelical groups to comply with Covid-related social distancing rules... with zero fuss, I might add...
...and they caved on the Aussie redress scheme at the eleventh hour, when it became painfully apparent that their tax-exemption was approaching the chopping block.