Link wheels haven't even been a thing since like 2011

This refers to an end of file error, which is similar to an end of line error.

Pretty common in Python, since there is no end-of-line character.

Despite what Google might say publically, backlinks are the single largest ranking factor, at least for keywords that are even mildly competetive.

While you don't necessarily need to personally build links, you do need to have links to make your site rank. inks from social media sites are still links.