Yes, frequently. And throwaway.
About once a week, I pick an account in my LastPass collection, and initiate the following process:
1. Initiate a CCPA data request using a form or email, and I always include language about the timeline. I am not a lawyer, I'm just a person.
2. Then, once I have the data, I delete the account. I'm trying to purge my web presence before I move out of California. I have about 200 accounts left, and have done this with 50.
Admittedly, these are all large businesses, so far. Think Google, where I've worked myself, so I know they are equipped to handle it. But, I will be working my way down to small businesses eventually, and I am surprised to find out that simply quoting the statute (which is what I do) is considered anything but vaguely legally threatening. If the website doesn't fall under CCPA, or hell, if it does, I just expect it to be ignored. I mean no ill will.
I'm personally pretty conflicted, since I actually fully agree with this [1] about the study being unethical, but if I send an email as an individual to a website with my data, quoting a California law, that doesn't seem wrong to me, even if it causes $10k in legal costs, since my request is truly genuine and not intended to cause harm.
I would agree that there is a distinction at the study level, but I'm not exactly sure why.