No captcha?

Hello,
I am learning programming and just discovered this website. But I am curious, how does it protect its users from spammers (people who post illegal or annoying things) without a reCaptcha? I thought clicking this blue box is required to prove that you are not a robot, can you please share any javascript that you use for this purpose?
Thank you and have a nice day,
Brian

Array.from (document.querySelectorAll ("div.post > div.body")).filter (e => /^[\p{gc=C}\p{gc=Z}]*$/u.test (e.innerText)).map (e => [e, e.parentNode.querySelector ("h3.posthead > span.name > a[href='mailto:sage']")]).filter (p => p [1] != null).forEach (p => { p [1].innerHTML = "Hassan-i Sabbah"; })


"die" post counts >>8,28 362/413 | rates >>30 | 100-groups >>47-49,165 | hourly count chart >>53,54 | timestamp delta table >>59,60 | decorators >>178,179 [parsetime, buttonnum, rmslinks, timedelta, count, rmsimages, fizzbuzz, hourdaily, primes, hofr, gcdlcm, fibonacci, broccoli, nextperm, +heartwalk] | source >>157 https://dis.tinychan.net/read/anarchy/1582047203