Actually, Yuki himself explained it. I think he meant they wanted to do the one-stop strategy unlike others.

“We were listening to what the tyres say and they held on quite well in the first stint. That helped, I think that was a key moment. I think in the end, what we [did] on the strategy itself was okay.

“Even [if] I did the same exact same strategy as the top teams, I don’t know if we’re able to finish P6 anyway. So I think we don’t have regrets.”

(Actually I wrote another comment saying the same, but at the time I didn't know Yuki's quote. In addition, that comment of mine doesn't show up, so I assume there was an error and my comment didn't register in the server.)