I think deep down that's a fear most people have, that AVB was indeed out of his depth and largely incompetent during his time at Chelsea. But that's exactly the reason why HR shouldn't be brought up as a stick to bash him with. Rightly or wrongly, AVB was appointed at Spurs. All of us want him to succeed, that's without doubt. You included. So giving him a bit of faith is the best way (and, indeed, the only way for us fans) to maximise the chances of this happening. That can't be done if HR's shadow looms over him at every turn.
Perhaps people are being too hasty in dismissing Redknapp. But that's only because they want AVB to succeed. They want to back him because they're scared that, if they don't, it'll end up like Chelsea all over again. Ergo, they try to forget HR's era and look forward to AVB's one. It's not erasing his role from our history, it's giving AVB a fresh start free from the influence of his predecessor.
I sincerely hope that's the case, anyway. And I do think it is.