I like how you've used an obscure athlete to describe a better known one (to us)
Yandle broke the ironman streak in ice hockey, but by the end of it, it was all he was known for; he had become a soft, poorly-performing defenseman who shunned all contact and avoided going to the corners, and was even traded to a team that promised not to healthy scratch him no matter how badly he played in pursuit of that record, such that when he actually broke the record it was a completely damp squib, he was promptly scratched and somebody else took the record off him soon after, and despite what a stalwart player he'd been for many years to be in the position to be close to that record, because of what he became in the last couple of years of his career, his enduring legacy ended up being of a soft, weak player who didn't deserve his place and would shy away from anything that was too much like hard work.
Similarly, Adam Hansen for many years was a tough as nails, respected domestique who worked hard for his team in the Classics and as a rouleur in the Grand Tours, doing the donkey work. But after a while once it was noticed how many consecutive GTs he was doing, they started extending the streak and making a big deal of it like it was The Undertaker at Wrestlemania, and by the end, he wasn't even doing much of a job for the team, just being there to be there and extend his streak. He never did anything of note, usually if he did do his job for André Greipel he'd have finished his work and peeled off before the stage even made it to air, and the most memorable thing about his late career was having a tantrum because he didn't want to do a long stage in the rain, so just like Yandle, he became a guy getting selections as a charity case to keep his streak alive, and who was shying away from anything that looked too much like hard work.
If we get circa 2012 Adam Hansen in this role, then great. But sadly that's not the Adam Hansen I remember most anymore.