You're bias is showing and you're not being objective. Wilder quite clearly stuck to, and executed, the plan perfectly until he gassed; Fury is the best heavyweight on the planet and had to work out what was going on where other boxers mightn't have gotten the chance. Once Wilder was tired, he reverted to type, which is to be expected as he's then fighting on instinct, but you can't just throw out how he started the fight and how he was until the tank flagged.
The weight gain backfired, but the strategy he came in with was winning him rounds, initially. A fighter like Fury is going to work it out and he's a better fighter than Wilder, so it should always logically then only go one way (if Fury didn't have so much animosity and want to K.O. Wilder ASAP); there's more garnered about Wilder in this fight than any other he's had as a fighter.