1099s don't need to be attached to your 1040. So you can attach either one (whichever is more accurate) or none. Your own records of what are fees and what are reimbursements are what you report--but they need to be accurate and match, or close to it, the 1099s (PayPal or the total of the ones you get from the MSCs).
I used to count all incoming $$ as revenue, then deduct all expenses (including reimbursed amounts). But it seems that a lot of MSCs report the two separately, so I think I'm going to just start counting fees and only deduct required expenses above the reimbursements. I haven't done my 2021 taxes yet, so I need to look and see what's what. I didn't earn enough to get any 1099s last year, but I will this year, so it'll be good to have a plan in place for this year's taxes.
I learn something new every day, but not everyday!
I've learned to never trust spell-check or my phone's auto-fill feature.