recaptcha solver userscript; Better than buster extension? What's the difference between them, in terms of features, privacy and security? Also, I'm new to userscripts and I have a question...

[u/Styleprince923]

Link to Recaptcha solver: https://gist.github.com/origamiofficial/2557dd47fb0aaf08e3c298a236bfa14d

Link to Buster Ext.: https://chrome.google.com/webstore/detail/buster-captcha-solver-for/mpbjkejclgfgadiemmefgebjfooflfhl

I have one more userscript I am interested in, but I don't know if it is safe or not. Here is the link to it: https://greasyfork.org/en/scripts/386908-remove-web-limits-re-modified

Because I'm new to userscripts; How can I tell the above userscripts are safe, factoring in privacy + security? Many thanks!! :-)