Look man, we can obviously give sinner the benefit of the doubt and we can obviously have our opinión that he didnt cheat based on the little we know about him, which is basically his public image, but by no means we can state that he clearly didnt cheat, just the same we cant say we know 100% that he did, the organisms that judged that found his story "plausible" but even them cant be 100 per cent sure, just that what they had was not enough to ban him for 2 years which would basically destroy his career.
About players being regularly tested, well, cyclists are tested even more, and still a lot of them got away with It, and not only hiding positives, but by a lot of precise methods to hide whatever is in the blood, anyway, i also find hard to think a player like sinner would do that, but then when you think about It, we dont really know him, he even might have been misguided by his team, the posibilities are endless, all this to say, we can never be sure, only he and his team know, its pointless to tell ourselves, oh sure he didnt cheat, or, oh he for sure did, the reality for good or bad is that we Will never know.