But the targeting of a specific ethnic group, because they are that ethnic group is, isn't it?.

I think this is a pretty good article on the topic, https://www.bbc.com/news/world-europe-61017352 and presents both perspectives.

Killing people who support an opposing faction isn't genocide either, that is just regular dictatorship terror tactics. The fact that Putin argues that Ukranians don't exist and that they all are Russians just supports that it isn't a genocide, as he doesn't intend to kill all Russians, just the "Russians" who refuse to be Russians.

Instead of calling it a genocide, call it a massacre. Russia is massacring Ukranians, nobody is arguing against that, and the world stopped accepting such behavior even in wars a long time ago. Prematurely calling it a genocide just makes people stop listening to you.

>The fact that Putin argues that Ukranians don't exist and that they all are Russians just supports that it isn't a genocide

as it turns out, the exact opposite is true. attempting to erase a people (as in "the Ukrainian people") is a pretty common aspect of genocide, and includes forcibly destroying their identity as a unique people

>Prematurely calling it a genocide just makes people stop listening to you.

then it is good that nobody has done so prematurely, as people have not stopped listening (unless you personally constitute "people" ;)

for more examples of the genocide you're denying, a non-comprehensive list of genocidal policies russia employs in Ukraine is at https://news.ycombinator.com/item?id=31447187

per the definition of genocide that I found on the UN's website, they are easily committing at least one of the points that defines a genocide. That is

- Forcibly transferring children of the group to another group.

https://www.un.org/en/genocideprevention/genocide.shtml

> he doesn't intend to kill all Russians, just the "Russians" who refuse to be Russians.

Given the slaughter of civilians in the majority pro Russian regions of Ukraine i'd argue that is easily false.