Roku recently released a software update that added AirPlay support [0].
If you have iOS, you can beam HBO Max content from iPhone to TV. Not as ideal as having the HBO app on the Roku OS itself, but better than having to buy extra hardware.
I agree with you both. "turning on GPS" could just mean that while driving one has the view of the roads on to see which one's have traffic, not necessarily getting turn by turn directions to and from work every day.
If you have iOS, you can beam HBO Max content from iPhone to TV. Not as ideal as having the HBO app on the Roku OS itself, but better than having to buy extra hardware.
[0] https://blog.roku.com/apple-airplay-homekit