Yeah, it's annoying, but also nothing particularly new I believe. There seem to be two types of garbage links added by default:

1. "Sponsored shortcuts" that can be "easily" turned off in `about:preferences#home`

2. I guess "non-sponsored" shortcuts? I believe they pointed to Facebook, eBay, and something else (Pinterest maybe). Those have to be removed/"blocked" individually. I think they end up in `browser.newtabpage.blocked` after doing so.

I don't like that this is a thing I have to do whenever I set up a new Firefox install. It's not often, to be fair, but it still sucks nonetheless.