It's because Apple framed themselves as the company of "LOL Macs don't get viruses" and emphasize themselves to be more privacy focused than Android... ...and

It's because Apple framed themselves as the company of "LOL Macs don't get viruses" and emphasize themselves to be more privacy focused than Android... ...and they made the same basic mistake of allowing one of the single most exploitable attack vectors ever. They kinda shoulda known better, honestly.