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

Here's a filter for those posts whose posters have conceded that they do not have any images available from news organizations that would expose themselves to lib3l suits, so they have to resort to their own shops. It'll be upgraded as needed, such as by improving the regex.

Array.from (document.querySelectorAll ("div.post > div.body")).filter (e => /[.]imgur[.]/.test (e.innerText)).forEach (e => { e.innerHTML = "Here's my shop on imgur."; })

Upgrade of >>394 to test for links:

((regex, replace) => Array.from (document.querySelectorAll ("div.post > div.body")).filter (e => Array.from (e.getElementsByTagName ("a")).some (a => regex.test (a.innerText))).forEach (e => { e.innerHTML = replace; })) (/[.]imgur[.]/, "Here's my shop on imgur.")


And here's an indefensible post by rms, just in case someone wants to criticize him using elements of reality. https://www.stallman.org/archives/2021-may-aug.html#30_June_2021_(Calling_teenagers_children) The UK intends to close "The loophole that allows 16- and 17-year-olds to marry with their parents’ consent" https://www.theguardian.com/global-development/2021/jun/30/pauline-latham-mp-picks-up-bill-to-end-child-marriage-in-england-and-wales and instead of applauding this, he still phrases it as something he doesn't know: "Maybe it is unwise for people under 18 to marry [...] I clearly don't know", and posts his usual quibble about children versus teenagers. That's how to criticize rms using elements of reality.