To judge people who spell "come" as "cum"?

[BupcakesandCunting]

Because it is is WRONG and more than a bit boaky?

FFS you're only saving about 0.00001 of a second by spelling a four-letter word with three letters. Saving 0.00001 of a second and making yourself look a fool.

AIBU?

No I am not thanks for agreeing.

The mental image is indeed very ... ugh. Really not the best choice of words for an advert.