Myers Briggs personality test

So like. I use to really get into this shit. But these days I'm not so sure. How locked in is a personality really? I feel like a different person in just a few days. What are the arguments against the 16 personalty tests and is the basis for it even that strong to begin with?

INFJ here, according to the test. I feel like it's spot on but maybe I'm just reading too much into it.

And oh yeah. ENTP.

https://www.16personalities.com/enfj-personality ENFJ-T? ANIME PROTAGONIST!? Zero The Fool tarot card with multiple Personas!!! So that obviously means I'm destined to be the next Kirito muhahaha! Where is my invincible plot armor so I can Mary Sue my way to victory? Waifus COOOME TO ME!

I got the Assertive Advocate personality type: INFJ-A. Everything is pretty much spot on, except the part about being a perfectionist. My apparent role is: Diplomat, and my Strategy is: Confident Individualism. I am a confident person when it comes to things that I'm passionate about and will always stand my ground to push my oppressor and sway them to my side. I didn't know the word for it: Insightful, but I got 4 eyes, 2 to see whats in front of me and 2 to see through bullshit. I am altruistic, no matter how much I protest that I don't care, I secretly do. Weakness said a lot that I agreed with except sensitivity to criticism and then being a perfectionist. As long as I don't hear a condescending tone of voice, millennial this or gen z that, we're good. Definitely don't see myself as a perfectionist, it's just not in my nature; I'm just to impulsive to feel/want to be perfect. I don't really have a lot to say about the other stuff, like I said, it's spot on except the perfectionist part.