My professor draws sigma notation unironically like pic related, should I drop the class?

>finite sum
>diverging
yeah okay

>indexing by i
>not by k

Good luck indexing complex expressions by i

My professor draws sigma notation unironically like pic related, should I drop the class?
I'm a jew and that's seriously unsettling because I'm the only who is taking that class

>not indexing by j

>not indexing by n
You people disgust me

>not indexing by x

...

>not using non-latin and non-greek symbols for indexing
literally a pleb

איי למאו