Yes it is. Port complexity is real, especially with analog ports, and relative to what you can do with physical space in a phone package the space required for
any port is significant.
While I decry the drive towards "1mm slimmer!" do consider that the 3mm jack is probably around 10% battery capacity in space usage on most devices. You might not be able to perfectly reclaim the space, but still, I would always prefer to just use a wireless headset with 5%+ more battery.
