Only companies and developers would know the details. Of course they are auditing, and if you ask, you will probably get some kind of response. On the other hand, they may not tell you for security reasons.

Do you know for sure the algorithms are audited? Has a verified 3rd party publicly reported their findings? A government or company saying “we were audited - trust us” holds as much credibility as them saying “we’re the best government/company in the world - trust us”. The purpose of having auditors is to provide assurance to a group of people (eg - shareholders, potential investors, citizens, etc.) without publicly exposing trade secrets, security details, or other sensitive data. If a government/company takes transparency and ethics among other things seriously, they would regularly have their algorithms audited and the findings would be made available ins relevant way.

If we’re going to lose them sooner or later, wouldn’t it be better to make use of them in order to achieve a more prosperous society?

I guess my country is trying to figure out how to enrich our society in the future by acknowledging that privacy does not exist. And shouldn’t we?

No - absolutely not. If we had this mindset for every social issue, we would never have progressed as a society. If the government were to come and take each citizens possessions every few weeks, would you just say “well, I trust they’re making better use of my possessions than I would have. It’s surely going to benefit my society better if they have it than if I did. I might as well might head down to the townhall each week and give them whatever I acquired that week to make it easier for them.” I’m sure it may sound a bit silly or hyperbolic, so maybe think of a people who feel their taxes/garnishments/tithes/etc. may be a little too high - same principal. Now re-read that but replace “possessions” with “privacy” because that is exactly what we’re doing. People may be OK with things because they don’t understand what is going on. Following this analogy, as soon as people find out that their possessions are being misused, people are going to be very upset. Likewise, once they realize their privacy is being abused, they’ll be very upset. It may not be this year or this decade, but continuing down the “well privacy doesn’t exist, so let’s keep abusing people’s privacy further” path will eventually lead to a very upset population.

The state also justifies the arbitrary harvesting and storage of biometric information by claiming in court that "it is the natural authority of the state to store information about its citizens. If this is followed, there is already no privacy at all in the public sphere. And large corporations will follow the state’s argument and say that it is their natural right to supplement their customers’ information.

Just because the government is doing/has been doing this doesn’t make it right. However, your government must have restrictions to this, right? For example, they’re likely not doing annual home inspections to look for signs oof"resistance". If they are, do you genuinely think people are OK with this? If they’re not doing that, do you think people would openly and willingly allow and encourage that behavior?

Same for the Disney comment. Find me a privacy rights activist who is OK with Disney checking fingerprint, but not small businesses doing something similar. I imagine you’ll have a very hard time doing so. I hope this is outlawed and/or Disney (and any other company that unnecessarily collects biometric information) stops this behavior because Disney most certainly does NOT need anyone’s fongerpirnts in order to operate their theme park.