They can also sign up and post spam/scams. There are a lot of those spam bots on YouTube, and there probably would be a lot more without any bot protection. Another issue is aggressive scrapers effectively DOSing a website. Some defense against bots is necessary.
I use manual verification on first post (note: can probably use an LLM to automate this), or just not have a comment section in the first place. That way, you moderate based on content, not identity or mental ability (which can be discriminatory and is also a losing game, as seen in TFA).
Either that, or just be honest and allow anonymous posting lol
