I still believe RE is clean at this point, of course no one here has any idea. My thought process is this: No one is going to pick up cycling and doping at the same time, especially at age 15 or so; he was good right out of the gate; what usually seems to get cyclists on the gear is a lack of results, which he's never yet had. Ergo, no need to dope yet.
Maybe not back then, but he did have a reason to start doping several months in his pro career. According to a teammate of his (I think it was Lampaert) Remco missed his winning ways a lot (which is more than understandable, of course.)
He almost won his first ITT in January already, but that was against a relatively mediocre Alaphilippe and a lack of other serious ITTists. After that, nothing close to a win for months.
Then he got schooled at Romandie to boot. The first race he raced with a large number of in-form WT riders. I don't think the UAE Tour is raced at the same level.
But you can even ignore Romandie, if you prefer, seeing as he crashed there.. His previous exploits, as impressive as they were, were not enough to compete with, let alone beat, or even embarrass some of the best riders in the world, man to man.
Shortly after those difficult months (difficult for his ego, I mean, his level was obviously more than fine), Evenepoel's level went up an ass load. He went on to a make a mockery of star riders like GVA on hilly terrain, Campenaerts on the flat, Wellens in the Ardennes, etc. Made them look like 3rd rate competition. Yeah, okay, totally expected.
Then followed his seemingly full ret@rd rides in San Sebastian and the European Championships ITT. Nothing to see here, either. A totally normal progression.
And now, a 19 year old kid who isn't built like an ITTist is arguably the third best ITTist in the world. Or second, if Van Aert doesn't fully recover from his crash.
That's a LOT of improvement in one year. Could he be clean? In theory almost anything is possible, I guess, but it's getting harder and harder to believe.