As much as we in Europe (let's call Israel "Europe" for this matter) can't get used to it - "tanking" can be valid strategy in NBA...
But not in this case... even drafting superstar can be not enough to fix damage it would do.
First. It's not start of rebuilding when all You're interesting in is stockpiling "talent". You already have player with superstar potential on the team for 4 years, he did great progress last (and current) season and it was looking as team as whole is improving too this year, By tanking you essentially signal that all this was nothing and you're on ground zero once again.
Second. Even if FO/Vivek were feeling that they're not going right direction and there's need for "tanking" another season - it would be huge mistake to talk when season begins that it will be measured by win/loss as then moving to "tanking" mode would certainly cause players to be frustrated even more.
...
But after saying all above I'll have some twist... I just don't think they're "tanking". I think they just didn't understand what devastating impact firing coach will have. When Vivek talked about "winning more games with Corbin" I think it was earnest or at least almost earnest. Maybe he thought - "ok, maybe it will not be more, maybe it will be 2 games less"... he just didn't think it may be 20 wins less.
Now it's not only about real impact/success of Malone, even not about style which doesn't suit the team well... It's mostly about lack of truth and frustration.
It looks like avalanche begins, maybe hiring coach will stop it as noone see anything positive in this season while moving on with "interim" coach...