It's definitely a good offer IMO. And the fact the board seems to be unanimously recommending to accept illustrates that.
AUT has considerable debt, so whilst it had a stellar future (even with the debt), this takeover is a nice risk-free way of monetizing future value whilst taking risks off the table.
I'd probably suggest that in this market, you'd have to be pretty greedy to be upset with this announcement...
Congrats AUT holders!