True but he's taking an opportunity away for someone who deserves it more.
I disagree that other drivers deserve it
more. If a driver, old or not, is competitive relative to his machinery, then he justifies that seat. He isn't hogging it if he's good enough. There are other, slower drivers on the grid who are obstructing new talent.
Hypothetical from years back to remove it from today:
Johnny Herbert retired at the end of 2000. He was old. But let's say he really wanted to keep going and tested for Prost, BAR and Arrows going into 2001. He tests
slower than Gaston Mazzecane, Ricardo Zonta and Enrique Bernoldi. Obviously he's not fast enough to deserve the drive and the younger drivers deserve those spots. But let's say he was faster than regular drivers Jean Alesi, Jacques Villeneuve and Jos Verstappen, then he's clearly still good enough for those teams.
I know there are always other factors as to why drivers get drives but I'm talking strictly about in-the-car matters.
I've said it many, many times that I actually don't want Fernando Alonso to come back to F1 because he's only diluting his legacy in a midfield car but I do think he still has at least one good year of real pace left in him.