It’s not seconds though, it’s in the order of tens of milliseconds of work, it’s faster to complete the challenge than most http requests will take.
last difficulty 5 nonce 645376 in 9 ms (101.6MH/s, avx512-x16)
This takes many minutes to solve on a cellphone, 9 milliseconds on a cheap VPS. It’s not stopping anyone.
>It’s not stopping anyone.
You could just spend 30 seconds googling instead of confidently asserting nonsense. There are plenty of people demonstrating that Anubis reduces bot traffic.
Yep, on my aging phone it takes quite w noticable amount of time to go through. But on my more recent laptop wnd workstations, it's a quick flash of a manga lolita.