I believe everyone has a wonderful Self at their core. I also believe that emotional burdens, originating from painful past experiences, lead many people to express toxic behaviors and engage in toxic relationships (a dynamic whereby physically and/or emotionally harmful behaviors are participated in between two or more people). That is not the same as labeling a person themself as “toxic,” which I do my best to avoid ever doing.
When I use the terms narcissist, narcissism, or narcissistic, I am referring to a certain clustering or set of behaviors being exhibited, not implying that the person or persons of concern are somehow inherently bad or “toxic.” Let’s face it, narcissism outwardly expressed is toxic to others witnessing it and is best dealt with by doing all one can to avoid enabling or reinforcing such behavior. This is ultimately best for anyone acting narcissistically.
Labels are powerful and useful, but, yes, if used thoughtlessly/with lack of discernment, they can be abusive, indeed toxic.