I just don't think the Thunder are tanking this year (I do think they were last year). They are a terrible team, but that isn't anywhere near the same thing as tanking. They have a very young team, which is growing, but they've had their vets in the lineup and rotation all season long (i.e. Favors and Muscala). I mean Favors is playing more mpg than he was playing in Utah last year. And sure their young players are playing as many minutes as they can handle, but the guys leading the team in minutes are guys you'd expect to be the core of their team going forward i.e. SGA, Dort, Giddey, Bazley, Mann, Robinson-Earl, Poku, etc. Young guys, but they have no random shut down of players, they are playing their vets, and they are generally playing hard. Now maybe they decide later to really tank, but that isn't now.
And no I don't think the Hawks are tanking, but they sold off a rotation piece for a future 1st round pick. No matter how you slice it, that is what they did, and that is absolutely the type of trade a tanking team would make. Obviously that isn't to say the Hawks are in fact tanking, merely that they are making a tanking team trade. Now perhaps that is setting them up to make a future trade, or maybe they've decided to get assets since the season isn't going well, but any time you trade a rotation player, especially a young one that you have future rights to, for a future 1st round pick, you have to question what is going on.