@cygnoir You can apparently import Chrome extensions, though I've never tried it myself (haven't even tried Arc!). There is an extension that I used to use all of the time, especially for sharing links with quoted text: Omnibear; it stopped working on Firefox but I think Manton tested it successfully on Chrome not too long ago.
And yep, I agree; too much of what the popular social media platforms already made much easier remains the realm of technically-inclined people here on MB. I even spoke about this problem with a similar issue as yours, and I know other folks have had such problems. The broadest wish I have for MB is that as much of the platform as possible gains much kinder on-ramps so that as many people, without sacrificing the integrity of the foundations.