Sure. I’m no fan of most proton products anyway anymore because their products don’t work with other software like calendar only works with their apps. I use vpn, pass and mail but the rest isn’t too useful for me and I rather use nextcloud. Not because their products are trash but because I want something slightly different.

As always, it’s different people working on different products.

Little bit old: https://fedoramagazine.org/randomize-mac-address-nm/ https://wiki.archlinux.org/title/MAC_address_spoofing

On grapheneos that’s default for a long time.

Yes

There’s an even easier method, if you do not log in for a year or so, discord deletes your account

No educated answer:

You can rate and block results which is very useful. They have a matrix room and the similar site search is cool.

Whoever is in charge of this:

Nextcloud is a very solid cloud solution which doesn’t suffer from those data leaks. https://nextcloud.com/

You do not have to sell the chromebooks, you can replace the OS with fedora. You can customize your OS acording to your needs with ublue https://universal-blue.org/

Using a public service like proton or firefox for that has the advantage of you blending in with the crowd, i.e. the service doesn’t know who the account belongs to whereas the service knows exactly that it belongs to you because only you have the top level domain.

In theory … in the real world it doesn’t matter too much because noone will hunt you down.

I guess that it’s no more of a hassle than using one email with your own top level domain.