It's a vegetable alternative to dairy milk, hence why the producers use the phrase 'milk'.
Don't get me wrong, I love all dairy products, but I decided to stop using cow's milk last year for a host of very good health reasons specific to me.
I often use goat's milk instead, but it can have a strong taste whereas oat 'milk' doesn't have a strong taste and is therefore way more versatile.
I've found that oat 'milk' is the only decent 'dairy-free' vegetable offering that works well for all sorts of recipes that would normally have required proper dairy milk.
Soya 'milk' tastes disgusting to me and coconut milk is OK, but obviously sweet, so not as versatile depending what you're cooking or baking.
PS - trust me, it produces fab pancakes every bit as good, if not better, than pancake recipes using dairy milk!
I wouldn't bother myself making them otherwise
PPS - besides, you're just an old-fashioned bunch of stick-in-the-muds who appear to not like anything new-fangled - unless of course, it has an engine in it! Where's your sense of adventure?!