This is not an all or nothing situation, people can criticise this for what it is, even if they’re using any of the products/companies mentioned by you. Navigating a tech-fascist ecosystem is difficult and every criticism here is valid and important.

(Not using any of the aforementioned products/companies btw)

I do this with “Markor”, great notes app for txt and md files. All files locally and synced via Syncthing. Been using this for years, love it.