
They're great actors, so why not?
P.S. I know this meme is slightly ironic. Antinous is lambasting Telemachus for wanting Odysseus to come back, even though Odysseus coming back would be what's best. Similarly, those of us who like the actors Nolan repeatedly uses criticize those who want new actors, even though the new actors may be what's best.
In any case, we've got a lot of new actors in important roles (Tom Holland, Zendaya, Jon Bernthal, Lupita Nyongo, John Leguizamo, Charlize Theron etc) so the concern that Nolan is reusing actors too much isn't entirely valid.