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

If the libel >>365 and ad hominem fantasy projection starts up yet again https://dis.tinychan.net/read/anarchy/1594578572 and is allowed to stand, then:

https://dis.tinychan.net/read/anarchy/1582047203#reply_328 ✞🐘✞ https://www.nbcnews.com/politics/politics-news/end-child-marriage-u-s-you-might-be-surprised-who-n1050471 ✞🐘✞ End child marriage in the U.S.? You might be surprised at who's opposed ✞🐘✞ Sept. 8, 2019 ✞🐘✞ Conservatives have found some surprising allies as they fight efforts to raise the marriage age. ✞🐘✞ A bill that would have ended child marriage in Idaho — which has no minimum age for couples who want to wed — died in the Statehouse this year. Republican lawmakers, who control the Legislature, opposed it, including state Rep. Bryan Zollinger, who said it "went too far." ✞🐘✞

https://www.stallman.org/archives/2021-jan-apr.html#8_April_2021_(Stallman_support) — Supporting Stallman against a campaign of hatred — https://stallmansupport.org/ — https://stallmansupport.org/comments-in-support-of-richard-stallman.html

https://www.fsf.org/news/rms-addresses-the-free-software-community — RMS addresses the free software community — by Richard Stallman — Published on Apr 12, 2021 10:24 AM