Alternate use? I would say the only use is something else than repeated use in running text.
It means “and”, but is not the same; in a text words are more comfortable (in this case, but with large numbers, the numbers are better choice).
In Finnish it’s used mainly in name lists, or for example shop names, it’s not at all a common equivalent for “and” in what ever case. So, when I see “&”, my brain automatically looks for a name list, reference, or maybe shop name, and this makes it heavy and slow.
This is only the second time in my life I’ve seen someone use it like that
Some time ago I actually wrote this in the Finnish forum, as I got instructions, where the person used this symbol, and how it was weird. I learned it used to be part of the English alphabet, but to my knowledge it never were in Finnish. Not even unformal written notes is it common. (Maybe in food orders.)
Also, it might give an impression, two letters more is too much, let’s be efficient, let’s not write much.
But, it’s their choice, of course, might be their style. Keep it how you like it
Just one point of view why the messages in cards might be short. (I find hard to write about this because I don’t want to give the impression I’m reading the profiles with a correction pen. No. I like different profiles, and I have no hurry to read the profiles, but I know someones stop at once, if there’s something they don’t care for.) So this is not to say something is wrong, or should be altered.
By the way, @SuzanneMarie I wonder did you have the questions all the time in your profile? Or did you add them later?