“Girl friends” isn’t the same as “girlfriend”, and your mother does not represent all mothers.
It seems aaomidi is recounting personal experience, and from my own experience, when a person earnestly uses “toxic” to describe how other participants behave it is often an apt description.
If you are human, you’re a person with emotions. When a person describes something you might enjoy as toxic, are you able to pause and notice what you’re feeling, and then choose whether or not to act?
I did this before responding to you, in an effort to help others that struggle with this, (I do, in some contexts). If a person still chooses to respond in a dismissive manner, or worse, then perhaps they enjoy being mean to others.