And someone will complain - you can't even have sensible defaults.
I understand you perhaps have hatred for google but hosting immich or ente is not for everyone.
It is far easier for average Jose to pay for GP or some cloud.
Unless you plan to setup at least some free cloud don't bother to lecture others
Never it asked.
My guess is this happens to overzealous privacy people that often clean cache etc.
If you are that ana l then why not
press and hold app. Disable.
Or even leave Google and install something like lineageOS
To have a healthy relationship with technology requires holding manufacturers and service providers responsible for our mental health.
Your suggested alternative of moving all photos to a laptop doesn't work for the people who prefer having all their photos accessible from their smartphone. That's the usable UI that the constant sync to cloud services gives them. The tradeoff is the cloud storage subsciption costs.
Also, transferring all photos to a laptop creates a single-point-of-failure if the laptop dies. Recovering photos becomes even more complicated when the internal SSD is encrypted with macOS File Vault or Windows BitLocker. Yes, photos in cloud storage isn't really a "true backup" in the 3-2-1 best practices sense but it's still more durable against catastrophic data loss than a single laptop.
The self-hosted Immich photo server is just one way to enable smartphone access to all photos and avoid paying for cloud storage. That's the reward for the "overkill" setup.
But after saying no three times, it really ought to leave the user alone...