Can I nominate Nairo for the most forgettable doped performance? I mean come on, if they found something compromising that would actually say a lot about the current state of the sport. Doped Nairo, a shadow of his former self. What would be the conclusion for the others then? Especially for the two Slovenians or WvA?
This stuff used to happen all the time during Armstrong's era (+ immediately after) & the mid-late 90's. There would always be some "loser" former star/wannabe who'd get pinched for some imbecilic doping attempt. Who can forget Vinokourov's "homologous blood transfusion" when he was way, way past his best in 2007? The list was endless. Meanwhile, the guys at the top went unpunished (until Landis & his lack of IQ blew everything up).
My own nomination for most memorable doping performance in recent times France's Julian Alaphilippe last year in the 2019 Tour de France, especially his comical "I'm fuelled by my magical yellow jersey" time trial victory over Geraint Thomas in stage 13. Top nuclear radioactive stuff that was. Funny anecdote: after Alaphilippe's recent dismal tour, Laurent Jalabert (aka France Television's EPO addict & commentator) claimed Alaphilippe's Tour 2020 performances had "zero relevance" because he was merely using the race as a warm-up the the upcoming classics & world championships (in order to handwave the fact he is way, way slower this year than last).
I mention Alaphilippe because the French have a funny habit of pretending their riders are super-duper clean (hello Voeckler 2011!) when we've seen a couple of the most hilarious "pas normal" performances from French riders without references in Grand Tours over the past 10 years.