This.
Also, it's a settlement deal offered by the WADA, who saw their case shot down by their own director acknowledging that there will be more and more nothingburger issues with extremely sensitive tests. Really the WADA shouldn't have appealed in the first place, but this I suppose is an acceptable way out for them. And with CAS being very unpredictable in this case, I'm not surprised Sinner took the offer. He's been cleared of cheating and PED abuse, he acknowledges his responsibility for his team's errors, takes the loss and moves on. He lost ranking points, prize money, the oppertuntity to compete and defend more ranking points and income, not to mention the stress and impact of this episode for nearly a year.
All the sad souls still calling him 'doper' without so much as a grain of evidence to support these harsh accusations based on innuendo, conspiracy theories, psuedo science and misinformation etc are just that, sad sad people.