They Are Dependent on Man
And saying that you can't do it without a group and without accountability and without an accountability partner is saying that you are, in fact, depending on the human being.
Which is not practical.
Depend on accountability partner? He could be on phone or it could be dead battery or on do not disturb.
Depend on group? Some cultures do not allow Christianity or Christian fellowship of any kind.
Most people in the world do not have our resources to pay for subscription to a web-based group. Or for all the resources etc. Not only impractical, racist or something similar.
Because poor people in other countries are not as important to God. Because He provides essential resources to us that He does not provide to them.
Making man essential is absolutely the opposite of the Gospel.
You might think, "well, they are making man essential only in that God chooses to work that way but if group not available THEN He can work without a group. Then why is it essential to ANYONE? How can you assume everyone to whom it is available He might also choose not to use it with them? If He can switch it on and off, how can you assume what He will do? Or what He has 'never' done?
The rules of their Universe apply mainly to the American church. Which shows short-sighted thinking which shows it did not come from God because He doesn't make silly mistakes like that.