I do not think having multiple links, starting with each main section, will improve the quality of this wiki. Multiple links in general do not encourage page movement. It just facilitates link fatigue, making the reading experience worse. Seeing lots of duplicate links in a row makes my reading experience worse, at the very least. It's not only tiring, it makes it more difficult for me to scan in the sea of blue for distinct concepts, and makes that color feature less helpful for me.
Regarding Wikipedia's standards:
We are not Wikipedia; Wikipedia is a good standard to follow, but following them 100% to a T is unreasonable. Sometimes it makes sense to diverge from their standards if it improves the quality of this wiki.
Regarding the usefulness of each section having a link:
When I watched a friend visit a specific wiki page, this is what I witnessed. They read from top to bottom, by scrolling downward. Sure, some sections they glossed over more quickly than others, but that was a conscious decision on their part. They didn't jump between random sections, as reading from top to bottom is the most common way. (Plus, they couldn't find the table of contents to jump to certain sections even if they wanted to, though that's another issue entirely.)
Yes, it's true maybe the wiki itself or another person links a specific section, but just like jumping halfway into a book, it doesn't make sense to cater the content of each chapter for those people, they should go to the start, or scroll up, to see what they've missed. They will survive.
Some pages have extremely short main sections. Like, actually one-sentence length. When this occurs, and the reader reach a new section, because of this rule, they get immediately bombarded by a new link.
Let's look at Goulden Sam's page for an example. We have a two-sentence intro, a four-sentence profile section, and then the main story section (which is considerably longer). With this rule, we link Card Castle 3 paragraphs in a row. This feels extremely unreasonable to me. I just (theoretically) saw Card Castle being linked several sentences ago.
There's a rule about item and song pages being exempt because they are so short. I agree as a whole that those particular pages are short. But what happens when other pages that aren't related to items/songs are equally as short? Where does the benchmark for "short" start and end? Since it's all arbitrary, do we use the longest or shortest of the item and song pages as the benchmark? How does this figure into other pages? We have some very very short NPC pages (pair of eyes and Vegetoid come to mind), do they get a free pass too? I don't like when there's just random exceptions to a rule, especially if they are unstated (like in this case for anything that isn't an item or song page), that can sometimes indicate there's a problem with the existing guideline.