No, it's not necessary but I think it's a great idea. It would be a nice thing to be able to see what the price is when I'm posting in Speculation. I don't check preev all that often and I find that I have to before I write something speculative. Not all suggestions have to be necessary in order for them to be good, and I think this is a good one.
It is unnecessary, I agreed. I do believe that no one in the forum don't observe bitcoin price when they boost their computers. Of course, if they have time to do spare things, and not have to completely focus on important works at their offices. For people whom dedicate their full time for bitcoin/ crypto, sure they will do check bitcoin price after their computers turn on.
In addition, real-time price of bitcoin might be annoying, sometime, when we need to focus on what we read and write. It is exactly the same like what was complained by community, and disable by admin, animated avatars.
Stop animated images in FireFox / Tor browser / ChromeOK, APNGs are now detected. Old ones are grandfathered for now, in part because people have ongoing campaigns, but in the future I might (or might not) go through and remove them.
Anyway, this is userscript, so it can be used for personal favorites, I don't offend it, but I do think that people who support that script and actually use it will still sometimes feel it annoying.