As diagrammed below, there is only one case where somebody asking a D&D 5E question should need a link to the basic rules.
| Has Basic | No Basic | | Has PHB | X | X | | No PHB | X | O |
These people, however, shouldn't even be asking a question, since they obviously haven't read the rules.
The corollary to this is obviously, if we don't need to link to the rules, should we actively remove the links?
I know this is a small thing, and probably doesn't matter, but, personally, I find the links distracting, since they don't add anything to the answer. Furthermore, whenever I come across this situation I'm left thinking, "This was a good question, the asker obviously already has (and has read) the rules, how is this at all helpful?"