there is different scales at which software is slow. this os one and definitely a pain in the ass. everything being online for no good reason other than to harvest user data. which it really turns out to be every time. (for good or bad purpose).

second is on a smaller timescale. so many features and crap that is never asked for and never used is crammed into software so the systems that execute it are just juggling pretty much dead code in and stale data in their caches all days long.