This is a pretty flimsy analogy because we're not talking about criticism, we're talking about taking pretty onerous, inconvenient steps to avoid having CSAM detected on your devices. You might not have it on your devices, but if you tell someone you're doing all this the average knee-jerk reaction is going to be suspicion.
I don't refer to it as CSAM. I say I'm switching because of Apple's surveillance of my files so they can find stuff to report to the police. People get it.
This thing is pretty well publicized, people do get it but not in the way you're implying.
If you have children and you explain to the other parents that you're just really passionate about privacy and are dumping all your iDevices for...reasons...your kids are probably not going to have friends come over to visit much after that.
Lying by omission isn't a good choice, because you're using a classic tactic of overstatement-by-framing that has been weaponized into standard police procedure to sway people into believing you. The truth is more precise:
"I'm switching because of Apple's surveillance of my files so they can find child porn to report to the police"
But that's also much less likely to win you converts to your cause, which is why we never see anyone saying it so clearly in these conversations. Which is more important to you, being completely honest about your beliefs, or evangelizing others to believe them too?