you say "many" but other than "fotzenfrize" Merz who declared this?

The US isn't a member of the ICC. Clinton signed it, but the senate never ratified the treaty.

France apparently allowed several times the suspect to fly over its territory without arresting him, for instance.

France has a deep history and Macron doesn't want to do anything except raise the defense budget, because that's the best way to avoid problems: condemn violence but don't participate and stay alert.

Hamas leaders are being killed faster then the ICC can get them. That is the ICC's fault of course.

There were zero dead Hamas leaders on Oct 8, but the ICC did nothing, and did not care. Not to mention there are living Hamas leaders in Qatar, today, and the ICC? Does nothing.

They are a joke.

It's a court, not a military force. What do you suppose it should have done, send the special judge forces to Quatar to kidnap them?

The ICC is an institution that requires member nations to adhere to it. Concepts like these require mutual respect for a rule-based world order; an idea that seems to be lost on people like Trump, Putin, or the Quatari.

Their bias against genocide?