Let's quickly check. EuroPython says nothing about a blind approval programme but does mention how they deliberately select talks to increase diversity: https://ep2025.europython.eu/selection/

PyCon US 2020 had a whole section of their website devoted to diversity. It specifically says that people should recommend them "appropriate" speakers and they are trying to create a "diverse speaker roster". This is the opposite of what you're claiming. https://us.pycon.org/2020/about/diversity/

It seems very unlikely hiding names would add more female speakers. In other very similar contexts that move always results in more white men being selected, not fewer. And in such cases the DEI proponents who advocated for it suddenly decide that identifying information shouldn't be hidden after all.

An embarrassing example of that was ElectronConf. They decided conferences had lots of male speakers because of unconscious sexism by conference organizers, so they hid all the names during the review phase. When the final slate was revealed, 100% of the selected talks would be by men so they just canceled the entire conference. They rather burned everything to the ground than admit their ideology was flawed.

https://news.ycombinator.com/item?id=14480868

This reveals their anti-male, anti-white agenda: hiding names is presented as an obviously good idea until they discover there was indeed discrimination, but by feminists. And then suddenly meritocratic selection isn't a good idea anymore.

This sort of thing is why DEI is immoral. It is always and everywhere anti-man and anti-western.