First off, iCloud calendar spam. Yeah, you festering spungmuffins, filling my calendar with your shitflung offers isn't going to make me buy it. It's going to make me want simmer your soul for the rest of eternity in big vat of festering donkey splooge.
Secondly, Apple, delete is not decline. I'd rather not let the mutant spungmuffins know I exist by kindly declining their offers (unless that decline arrives surfing atop a tsunami of hot, rancid donkey splooge). See, the clue you avocado-addled sunbaked fuckwits, is the fact you have both options on the menu. If I wanted to decline I'd select decline rather than delete, wouldn't I?
Thirdly, oh yeah, sure I'll go to iCloud and nuke the bloody option to receive this crapola. But wait, what's that Apple, my three random word, dIzZiLy CaPiTalISeD, and numerically unbalanced password isn't strong enough? It's already the fucking He-Man of passwords. What the shitting else can I do? Transliterate into Linear B and mix it up with Norse runes? Randomise it every 50 milliseconds? Make me sing it soprano at Siri every time I try to log in? What else do you want from me? Pig felching fucknuckling knobchuckling barneygobyeads the lot of you.