Yes they work but there are limitation in features.

Please provide the URL.

The web page might be crawled before you applied no index property in robots.txt file. You can simply remove the crawled URL from Google's cache using the GSC and then it...

Make sure your WordPress site settings allow search engine crawling. Check your robots.txt file to see if you're blocking Google. Please check your sitemap URL in Google...

It will not. The page would have to be utter garbage to make such a great effect on the site. As long as we are talking about yet another page/category, it's all fine. Do...

Welp, their code doesn't work either. Love it even more. Great site.

Woah.. That message got messed up. Of course you can't edit your post on here lol. Love it. Anyways, here is the code I was trying to provide you:

@michaelcrook Sorry all of these AI generated spammers are providing comments that do not help in any sort of way. It's pretty gross the @admins don't seem to be managing...

Ok thank you.

No, it won't be bad as you are thinking.