Why is Captured Lizard Minion not a minion? But a wearable. Can't it be both?

I don't know the specific whys of it, but apparently things that a wearables can't be minions and vice-versa

but maybe make it a minion instead? since it's a minion

The Captured Lizard Minion is a wearable version of this minion: While it's not an item that I can personally recall as being particularly popular at any point, I am pretty sure it was created because there had been many requests for wearable versions of minions and pets. (This is why we now have Lifelike Dolls for many of the pet species.)

Other Lizard Minion-based items that are actual minions are:

then if the one i posted is not a minion and that one is then the minion part should be taken out.

The word minion is part of the name of the item it is based on and acts as a specifier. In other words: It is not just any captured lizard; it is a captured Lizard Minion.

The name of the minion is Lizard Minion. It's not just a minion version of a lizard. It's a Lizard Minion. The coliseum challenger is called Lizard Minion too. That's just what they are