That is the point. People will continue to use these devices, even those that are aware and against it, even though there are easy alternatives that work just as good.

I use GrapheneOS on a DeGoogled phone with zero Google anything. There is no spying happening through my phone other than the cell service provider tracking and logging my every move.

I run Linux, and use privacy web browsers such as LibreWolf.

I use Brave Search engine and Mojeek search engine. Never use search engines that feed personal data and money back to Big Tech.

I host my own Nextcloud open-source online ecosystem, which gives me synchronized calendar, contacts, tasks, and more across all my devices. It also gives me document collaboration, file share, and Zoom like video conferencing, which will also do calls between phones, over my own server. Nextcloud does much more than just these features. It's a must have for personal privacy.

Of course Microsoft, Google and Apple will tell you open-source is not up to par, but the truth is it is better. Just make sure the hardware you buy supporters Linux.

There area many good manufacturers that sell computers with Linux pre-loaded, which guarantees Linux will run on your computer. (Purism, Star Labs, Slimbook, System 76, Juno, Nova Custom, Tuxedo, Kubuntu Focus, Dell, etc..)