LMAO.
Funny you would mention bikes, and you are right, it's not sport specific, the "experts" abound. They used to annoy me, now it's mostly entertaining. I coined the phrase "eminently confident, utterly incapable" at the bike shop a while ago. The look on the guy's face who thought he could straighten his derailleur hanger cause he saw how to do it online was priceless as he muttered "it shouldn't have broken off" over and over. We test mechanics for hire by giving them a bike (an inexpensive one) to build and pop some corn. The work stands are double sided, so I usually just look at my tech, and he gives me a nod, a shake, or a shrug.
OP, uni to uni will work fine. Learn to tie something else or not. Fishing is fishing.