Ive played a lot of Destiny 2. A cursory glance at my time wasted on Destiny 2 profile shows Ive sank at least 600 hours into the game. I think its probably higher, but a good portion of my playtime through Activisions launcher seems to have disappeared.
Source: N4G PC Why Outriders, Anthem, and Marvels Avengers could never touch Destiny 2