What happened to the "quote whole post" button?

[pfaffman (Jay Pfaffman)]

There’s another topic with people complaining about it and a (broken?) theme component to add it back.

Full quote button in editor missing

I’ve made another theme component to add back the composer button. It works like the original quote post button worked in toolbar. https://github.com/VaperinaDEV/quote-whole-post-composer-button