Job offer has a clause that says I won't get commission if I get fired, is this a red flag?

As the title states + also the offer says I revoke my right to file a lawsuit getting them to pay me out for earned commission (within the 30 day payout period) if they fired me

I know some companies have actively done this to their employees

TLDR - is this a red flag or is it just an industry norm to have this in the contract?