You're describing 'rebuilding' not tanking.
Rebuilding is replacing deadwood, with the motivation of improving as as soon as possible.
Tanking is actually wanting to finish at the bottom edge of the ladder, purely for picks.
The end result may look similar, but the word 'tanking' questions the motivation, honour and integrity of all people involved at the club.
No-one would have questioned Barrett if he said, as many rightly did, that Hawthorn are doing a heavy rebuild.
Tanking is just cheating by another name. Tanking is a slur. He accused us of cheating in other words, that's the issue
It sounds like you're saying tanking is a "thought crime" as there is nothing to distinguish it from rebuilding other than motivation.
Setting aside the stigma attached to the tanking label, the overriding motivation for tanking is not to finish at the bottom end of the ladder, it's to win premierships as soon as possible. Same with rebuilding.
Finishing bottom is a means to an end. Short term pain for long term gain.