Is this a serious question? At least one bag has been free in Economy as long as I can remember until they introduced 'Economy Light' on shorthaul flights. Still free on all other fares and on longhaul flights.
The OP has not specified which route he is talking about.
The majority of routes by LH are shorthaul.
We have established in this forum that most shorthaul Economy tickets are booked as Economy Light by default, esp. when booking through an OTA.
By a measurement of probability, my objection is completely valid.