

I believe there are some services, including some selfhosted ones, that allow you to quickly create (and later delete) unique aliases.
That said, I was surprised that these dictionary spam attacks don’t really happen all that much, at least based on my own experience. Most of the ambient drive-by spam my server receives targets email addresses belonging to domains I don’t even own. Blocking those and a few Sieve scripts gets rid of 99% of spam for me.
Interestingly, there was one time I received spam to a bogus address belonging to my own domain: A while back, one of my actual email addresses got leaked (thanks Sega) and a few months later that address got copied into another dataset but with a typo, which I assume was caused someone using OCR.
If anything I’d say that the lesson to be learned from this should be the exact opposite: No company is safe forever, so you should choose based on how easy it is to switch.
Chaining yourself to a single company all the way from the services you use down to the OS and even the hardware is only making it worse. Particularly when Apple is already aggressively anti-consumer on a lot of fronts.