Apple doesn't have "way fewer CVEs for macOS/iOS". Apple ranks 5th overall, and 4th so far in 2023, by vendor. In 2015 they were #1. CVEs track closely with the number of users a platform has, and the incentives to comprise that platform.

https://www.cvedetails.com/top-50-vendors.php

No. Number of CVEs has approximately no correlation with quality.

Yea, internet is dumb sometimes. Here is some context on the often dumb world of CVE https://www.youtube.com/watch?v=2Mfgjp_aK3I

You got downvoted because you didn't consider for even a second the game theoretic result of judging products based on the number of CVEs they've had.