I’d see it the other way around: apparently number symbols of these cultures have extremely common shapes. Especially the Debian logo is pretty universal. It was used in an Anime called Naruto extensively and it definitely did not have anything to do with the Thai interpretation of that symbol. This happened partly because this symbol is used in different areas of Japanese culture since a long time. I am pretty sure this applies to other cultures, just as well.
The Mint logo is just some weirdly shaped M which stands for Mint.
That said, it is interesting to see the bias resulting from your life’s experience. You interpret the symbols fitting to what you experienced during a lot of your lifetime. I am strongly sure that someone who studied e. g. Japanese culture cough me cough would tend to interpret such symbols definitely differently, from their own perspective. Same applies to Biologists, Psychologists, etc… Everyone from their own perspective.
There is a very old German saying:
Jedem das seine.
Which basically means:
To everyone their own.
Which I think applies well, in this situation where perspective matters and different human perspectives open a broad spectrum of views on a seemingly pretty one-dimensional topic.