Yes, that's the difference. When I asked on help forums questions like "Can I just set the budget with the assumption that how much money I make this month will be the same as next month", they said no, because I don't know what will happen to my paycheck this month. I need to divy up real dollars, and not expected dollars, meaning that the budget is a constantly moving target and I need to readjust and give a job to my actual dollars every two weeks instead of just my expected paycheck.

Understood.

I copy over all the previous months budget amounts and tweak it to match the current paycheck, if it's different. And frankly don't care too much if it's a few dollars off.

I do this in a spreadsheet. I had written an app for budgeting but it was too much hassle keeping it up to date. New versions of Mac OS would break it in subtle ways and wasn't worth the effort of all the bug fixes.