I know it’s like that by design, but it is still one step up from useless.
Let's be clear though ... on a scale of:
10 super useful - unquestionably worth getting
5 reasonably useful - likely worth getting for most under the right circumstance
0 absolutely worthless - not worth getting by anyone in any circumstances
It is currently a 1 (one step up from useless) but still far from useful. The only ones that provide any value at all are the early ones b/c they're all useful to some degree for the early techs. But once you pass Welding Rod, the useless junk comes out of the woodwork and 90% of what you find are distractions.
On the other hand, you're going to cap all the early recipes fairly early on anyhow, so having their locations known is pretty non-game changing b/c you're going there soon regardless and won't change your strat.
So if it's not going to highlight where the tin can, welding rod, rivet, bolt, struct or explosive bolt recipes are, little to no value at all.
In the end, it's not important whether it's a Feature or a Bug ... this is just nomenclature, doesn't matter if the implementation matches its description or not, it's a matter of whether it's Useful or Not, Worth spending AP on or Not, and right now it's Not in both cases in the eyes of most players (even asdfgh who sounds like he's defending it is really only arguing the nomenclature, and not the value of the advancement).