Aaah, there's a little gem buried inside all the guff:
I wouldn't unless there is no alternative
Given the state of the employment market, that probably covers 99% of those who have joined the company in the last decade.
Everyone surely knows the nature of the beast when the sign up, but do you not think it reasonable to aspire to negotiate improved Ts&Cs once inside. If you don't think it reasonable then your Ts&Cs will probably look a lot like Ryanair's in the not to distant future.