Nun, V frr. V npghnyyl gbbx n ybbx ng gur cybg naq V checbfrshyyl fcbvyrq gur raqvat bs gur fubj sbe zr, naq V jvyy abg or jngpuvat vg. V gubhtug guvf jbhyq or fbzr shaal zbpxhzragnel, ohg gur qenzn natyr jurer vg pbzcyrgryl ehvaf fbzrbar'f yvsr naq unf n qrcerffvat svanyr? Ab gunaxf.
My understanding was that if you know you're on the last episode then you'll expect things to be resolved or something like that. Similarly, you probably don't expect any twists on the second episode.
I've not heard of the series so I can't comment on it specifically but that was my take on their warning.
I don't understand. How would knowing how many episodes there are have an impact on the show? (And the number of episodes seems just... fine?)