I don’t have data, you don’t have data. All we know is that lots of cities choose electric/hybrid buses while no cities choose trolleys. If you think it’s because everyone working in the public transport departments is stupid and only some youtuber is super smart that’s fine. I’m sceptical.
Literally the first city I checked is switching gas powered buses to trolleys and new bus purchases are going down to 0 and Brno unlike many cities has an excellent public transport system
You checked one city at random and they were switching to trolleys? Amazing. Anyway, good for them. Let’s hope it will work and in a couples of years we’ll have some hard data to base policy on.