As said to the other commenter, I was unaware of it. Thank you for pointing out. Makes a lot of sense. This gives a different intepretation to the song as you

As said to the other commenter, I was unaware of it. Thank you for pointing out. Makes a lot of sense. This gives a different intepretation to the song as you can treat the whole phrase as a quote and that means «I’m sick of this» while I naively believed there was some doubt and uncertainty from the authors. Apparently they are just agreeing with the so called “cancel culture” or censoring