I'm the friend and family member who's "good with computers" and gets the brunt of those calls. I appreciate them, because it's nice to chat with folk I don't chat as frequently with as others in my life. The problems are often relatively easy and don't take much time. There's
never been any pressure felt on my end to "drop everything [I'm] doing" - if I'm not available, I'm not available, and I'll get back to them when I can (after all, I am in control of what my priorities are in my life - aside from my children, my life isn't dictated by others, but I do appreciate that sometimes things might be urgent for those with tech problems). Sometimes they've figured it out by that point and we chat for a bit longer.
There's nothing "obnoxious" about this. It might be for you, and that's cool beans, but your post speaks in a broad generalization that just isn't accurate for everyone.