How many times have to show it here?
Yes, it's just Steam, but Steam shows the trend (and they are reliable statistics, not "virtual" like "number of created accounts").

As we can see practically no one stays in BDO for more than 1-2 months. Maybe 1%, but same time 1% old players quit.

They're not welcome here if they're trying to change the fundamentals of the game we been playing for years.

PvE servers will NEVER work with the design of BDO. Everyone knows how it is in Season and Olvia.

The numbers straight from PA revealed recently from the dev livestream says that the game grew by about 200% in the past few months. Steam is not the only playerbase, nor makes even 50% of it.

And how many times this shows something close to nothing according to your maths logic? This can say how many players come and go only temporary only to come back later or permanetly and you can never guess... Unless you ask them yourself. And on top of that it's only about the steam version of the game. Still... This "99%" is something some sort of a fantasy.

I myself bought the game from the website just for info.

As we can really see, since its Steam launch BDO has a pretty stable population. If we compare population on similar months, there's even a slight increase. That's the only uncontested conclusion we can get from this. 

So except proving that BDO does a pretty decent job, what was the point of this screenshot? Nothing in this picture can prove your hazardous claim. If we go on with interpretations, with the same numbers, I can also say that players are sticking to BDO and even new players are slowly coming. 

It's not my problem that you (and others) have problems with basic math and data analysis.

I can see that the game today and for its premiere on Steam has the same number of players. Which means that the number of players does not increase for years. In addition, it's clearly visible that after each increase there is an immediate decrease so almost noone from new players stay here. Also the greatest increases occur during the covid period.

it corresponds to the periods when the game was free

The PK system needs to be improved. New Adventurers or fearful Adventurers are too scared to play.
Black Desert is an open-world game designed to allow you go anywhere, and let’s you freely enjoy your choice in playstyle. However, the level of freedom goes up, it means other Adventurers are able to interfere in the adventures of others as you stated. But there are a variety of safeguards put in place that don’t compromise the fundamental freedoms of the game.

First of all, there are many safe zones spread around, including towns and cities, the inability to PK characters under level 50, and the growth server Olvia has forced PvP mode turned off. In addition, we created an environment where Adventurers who recklessly PK are imposed with disadvantages that makes it difficult to harass an Adventurer. On the other hand, for adventurers who want to enjoy PK, we are continuing to develop a variety of PVP content, along with the Battle Arena, Red Battlefield, Arena of Arsha, Node War, Conquest War, and the desert itself.

We will continue to think about ways to make your adventures more enjoyable.

Dev interview.  Refer to link: Black Desert | PEARL ABYSS (playblackdesert.com)