Like, they could've just said 蕎麦屋 rather than そば屋 if that restaurant is selling dishes involving soba noodles for example. I've seen うなぎ more often when there's a Kanji for it (鰻) but decide to transcribe it using Kana, same with supermarkets or stores on them writing たまねぎ (玉葱), にんじん (人参), りんご (林檎), まぐろ (鮪). Also stalls that sell takoyaki often write it as たこ焼き (they've could used the Kanji for たこ which is 蛸).

As a relative beginner, I think it's funny that you say "they could’ve just said 蕎麦屋 rather than そば屋", since I can actually read the latter, but not the former. And my guess is that's why they write in kana; to be easier for people who don't know all their kanji.

Wife (native speaker)'s thoughts: lots of strokes, harder to read on small signs, etc. 薔薇 for rose is something that's almost never written. Another thought is older or variant characters that are now replaced by simpler ones in some cases just didn't catch on after. This is just her spitballing ideas and not researched.

Japanese learn a lot of these so most adults can read them.

Mostly not for foreigners like us but for highschoolers (and below) though. :)

There's even a scene in the Yakuza games where some characters go to a fancy restaurant and the menus are all in kanji. One of them admits he can't read the menu and the rest of them say they're having a hard time too. The owner then says it's common and that maybe he should update the menus to include kana to get with the times.

I figured this must be at least a somewhat common experience if the devs decided to include a scene like that.

Kana means chicken in Finnish.

Wonder if that means, that Kanji are slowly fading from public use as language tends to get simpler over time. Definitely would make learning easier

Kanji abolition has been attempted once, but lead towards failure since the consensus is that it should remain due to that being around for more than a millennia & ingrained in Japanese culture.

I don't mean through legislation but through disuse. If the average Japanese person knows less and less Kanjis, they would slowly fade from daily use...

I'm Greek not Japanese, but even in Greece there's basically "high Greek" and "normal Greek" now. It's common even for natives to not understand the formal words because nobody uses them outside of poetry and politics. They're still in the dictionary though

There are certain words that technically have a kanji spelling, but are usually writen in kana even outside of signage. I think it's mostly words that would have been important to historically less-educated people, so a lot of them are foods. It's probably not a coincidence that it's not uncommon for women's names to be written wholly or partially in kana (e.g. かおり, このみ), who traditionally are the ones to buy the groceries.

On top of that, for signage specifically it's lot easier to read things like そば, ラーメン and たこやき/たこ焼き from a distance than 蕎麦, 拉麺 and 蛸焼き.

I was told by a local that, mirroring what other people are saying, it’s so the menu is easier to read and readable by more people.

In the past, Japanese literacy was lower and immigrants also had difficulty reading Kanji (especially Chinese immigrant, since Japanese Kanji is often altered in form and sound when referring to the same thing).

Japanese restaurants mostly keep doing it out of tradition rather than necessity.

(Running counter to this, some Japanese restaurants also use the outdated Yamato style of writing for traditional and aesthetical reasons. Even locals sometimes have trouble reading those character and its use is usually relegated to the shop’s name.)

That's very silli!