My thinking is why unnecessarily flood the network with transactions? Would you want to double the size of the chain just for kicks? I wouldn't, but that's just me.
also, some people think memo activity unnecessarily floods the network. only way we can say if txns are "worth it" is if someone chooses to pay the txn fee.
I don’t think the stress tests are “just for kicks”. They have a purpose. Not just for showing off the capacity but also seeing potential issues that need to be addressed.