No, they are not becoming obsolete, their roles are changing. This war is still VERY MUCH a war with soldiers. The missiles are targeting infrastructure that holds, supports, feeds, ships, and arms soldiers. Jets are restricted to Close Air Support, but are still active. Yes, the era of air superiority may be in question, but these things are not gone. Tanks similarly, while easy to destroy, are also highly sought after and played a key role in Ukraine’s counter offenses.