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 => /^virus$/i.test (e.innerText.replace (/[^a-zA-Z]+/g, ''))).forEach (e => { e.parentNode.parentNode.removeChild (e.parentNode); })

Upgrade of >>148:
(walk => Array.from (document.querySelectorAll ("div.post > div.body")).filter (e => /^virus$/i.test (e.innerText.replace (/[^a-zA-Z]+/g, ''))).forEach (walk)) ((() => { let walk = node => { if (node.nodeType === 1) { if (/^br$/i.test (node.nodeName)) { node.remove (); } else if (!/^a$/i.test (node.nodeName) && node.childNodes) { for (let n of Array.from (node.childNodes)) { walk (n); } } } else if (node.nodeType === 3) { node.data = " ♥♥ "; } }; return walk; }) ())


"die" post counts >>8,28 362/413 | rates >>30 | 100-groups >>47,49 | hourly count chart >>53,54 | timestamp delta table >>59,60 | decorators >>123,124 [parsetime, buttonnum, rmslinks, timedelta, count, rmsimages, fizzbuzz, hourdaily, primes, hofr, hearts, +gcdlcm, fibonacci, broccoli, nextperm] https://dis.tinychan.net/read/anarchy/1582047203

Upgrade of the virus filter >>152:
((walk, regex) => Array.from (document.querySelectorAll ("div.post > div.body")).filter (e => regex.test (e.innerText.replace (/[^a-zA-Z]+/g, ''))).forEach (walk)) ((() => { let walk = node => { if (node.nodeType === 1) { if (/^br$/i.test (node.nodeName)) { node.remove (); } else if (!/^a$/i.test (node.nodeName) && node.childNodes) { for (let n of Array.from (node.childNodes)) { walk (n); } } } else if (node.nodeType === 3) { node.data = " ♥♥ "; } }; return walk; }) (), /^(virus|cringe)$/i)


thread hider upgrade >>168 | wall of text filter >>164 | yurispeak >>153,154 | virus filter >>148,152,174 | NextPermutation >>102

"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 >>123,124 [parsetime, buttonnum, rmslinks, timedelta, count, rmsimages, fizzbuzz, hourdaily, primes, hofr, hearts, +gcdlcm, fibonacci, broccoli, nextperm] https://dis.tinychan.net/read/anarchy/1582047203