It’s not “bypassing the captcha” that is the problem, but accessing a server in a way that you are not allowed to.
Say you are a human being, you visit a website, there’s a captcha, and your eyesight is quite bad. The website is ok with humans using the site. So asking your nephew to enter the captcha is fine.
Now you are running a bot network. The site doesn’t want your bots. The captcha is there to stop them. The problem is not these bots getting around the captcha, it’s them accessing the server. The captcha might make sure that the site counts as “protected” though, which might make accessing it without authorisation more serious.