How to change Taxonomy admin page title? I simply need to change the title on the (Drupal 8.8.4) administrative page which lists the existing vocabularies.

As far as I know/read, the routing.yml should be modified, shouldn't it?  (Is only the *defaults_title parameter that needs to be changed?)

Inside the taxonomy.routing.yml file, I only get the form routes for taxonomy term, if I am correct.

Do I need to modify the route elsewhere? 

I have tried with the system.routing.yml file, listing many administrative routes (I thought it was the jackpot) but there is no route for the taxonomy page.

Could someone tell me where to go and which static route to change?

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Could someone tell me where to go and which static route to change?


It's not a static route.  Like other entity collection routes, it is built with the aid of the comment annotations above the Vocabulary entity class.  VocabularyRouteProvider also comes into play, and it sets a _title_callback into TaxonomyController::vocabularyTitle for good measure.

At any rate, this is all a bit moot because you don't want to go modifying core files, because then when you update core you will have to patch them all over again.  Very tedious.  Instead you could implement your own RouteSubscriberBase::alterRoutes.