A year and a half ago, I hit 4,000 achievements on Steam. Sometime last month, I hit 5,000, because today I am at 5,015.
I presume that I played some games with a lot of achievements, because that works out to 1.8 achievements/day. As much as I pursue achievements, that seems like a lot.
I have no deep thoughts here. Just, “wow, another 1,000 achievements.”
Edit: 6,002 achievements on May 7, 2020.