“Pretty decent” is one thing. At this point, Sale is a Cy Young candidate.
If I asked you to find another example of a pitcher who, at age 35, suddenly started pitching like he did at age 29, despite having pitched much less effective and much less often from ages 30-34, could you? Sale was nowhere this good back in 2019, and that was five years ago.
Even Luis Tiant was younger when he had his very successful bounce back. He was only 31 when it started and by age 35, he was starting to decline again.
Granted, Sale was always in better physical shape than Luis. But to do this at his current age is probably unprecedented….