Don't be so eager to see POP leave, 20 other teams would love to have what he brings to to a team. Most teams would likely move on to a new coach after 2 consecutive years missing the playoffs. Although this is 2 years interrupted by a pandemic, which if Covid and D.White injuries never happens, this team is clearly a playoff team.
Pop would love for the team to still be successful after he retires, and after two years and the need to rebuild, it might be in the best intrest of the organization to keep a young talented coaching staff together to rebuild the Spurs, so if he leaves, he thinking in the best intrest of the organization and players not himself.