You are wrong in your understanding because it is not "Bitcoin is for Investors" but instead "Bitcoin is for investing" meaning we can choose either you invest or use for transactions.
Bitcoin is a currency so meaning we can make use whatever we wanted,never mind those mentioning that this is for investors only because most of them don't even understand what Bitcoin is really all about.
Bitcoin may serve as a good investment tool, but it wasn't made for investors only.
Simply correct because this is a currency and no one can can dictate us whatever we wanted this to be used.