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

count interval
168 0m
162 1m
10 2m
8 3m
1 4m
1 9m
1 13m
1 14m
1 15m
1 55m
1 1h 20m
1 6h 12m
1 8h 12m
1 10h 7m
1 10h 30m
1 11h 52m
1 15h 36m

posts code in /prog/

console.log ("count interval\n" + Object.entries (Array.from (document.querySelectorAll ("div.post > div.body")).filter (e => "die" == e.innerText).map (e => e.parentNode.querySelector ('span.post_time').innerText).map (s => s.match (/^2021-01-(\d+) (\d+):(\d+)$/)).map (m => [parseInt (m [1], 10), parseInt (m [2], 10), parseInt (m [3], 10)]).map (dhm => (dhm [0] * 24 + dhm [1]) * 60 + dhm [2]).reduce ((acc, item) => {
[deltas, last] = acc
if (last >= 0) {
delta = item - last
if (delta in deltas) {
deltas [delta] += 1
} else {
deltas [delta] = 1
}
}
acc [1] = item
return acc
}, [{}, -1]) [0]).map (([k, v]) => [parseInt (k, 10), v]).sort ((a, b) => a [1] !== b [1] ? b [1] - a [1] : a [0] - b [0]).map (([m, n]) => [n, (m - m % 60) / 60, m % 60]).map (([n, h, m]) => n.toString ().padStart (5) + " " + (h > 0 ? h.toString ().padStart (2) + "h" : " ") + " " + m.toString ().padStart (2) + "m").join ("\n"))