If he's spending so much time playing it in person AND online then I do agree the time he's playing vs. spending time with you is alarmingly disproportionate, especially if he is spending some of his leisure at home but opts to play D&D online with friends rather than sparing it to have some quality time with you.
I think a deep discussion with him is in order. But no, you are not in the wrong for wanting him to dedicate some time out of his schedule to you.
I personally don't see the "Eureka!" moment that big tech apparently does in moving EVERYTHING to the cloud when they struggle to design safe and reliable services as is. The whole cloud stuff just kind of says "sure it will be a privacy nightmare rife for exploitation from bad actors, but THINK of the money we could earn from it in the long run!"