Yeah I’m not sure whether this is shenanigans or an actual problem Brother is managing here. The post does mention there are problems with incorrect response to temperature management with the unoriginal cartridge, which again could theoretically cause harm.
I honestly wasn’t aware unoriginal cartridges were a thing for Brother printers, since the originals tend to be quite reasonable.
But to continue using the unoriginal cartridges he can as the answer states, use BRAdmin to downgrade the firmware.
So it’s not like Brother is attempting to take control of your printer like HP likes to do.