So since we don't know that the offers for Kane were any better early in the season there's no use complaining about when he was traded, only that he was traded.
And there's no sense in complaining about him being traded because the biggest douche move Botterill could have pulled woukd have been keeping Kane here until the bitter end. He was going to free agency, and not being given a crack at being a rental on a playoff team would have certainly made him sour enough to never come back.
At least now he gets to go play meaningful hockey on a real team. Not trading him so that he could do that and then letting him walk in free agency just so Chet and Muffy could see him play 10 more games would have been stupid.
It's not like the Sabres got any worse after he left anyway.
Botterill is worried about the future. Kane wasn't going to be a part of that and this season didn't matter anymore. Move on.