Yes, fred, it is a long held convention (though I don’t think it’s written down anywhere) that no Parliament can bind its successors so, for the moment, I don’t see that eventuality arising.
I think we will have to agree to disagree, jake, because whilst the 2010 Act prevents the snatching of another term 'while the going is good', it also prevents MPs from bringing a poorly performing executive to account when the going is not so good and that, in my view, is far more important. For the bill to be most effective in its aim of preventing the dissolution of Parliament there should be no provision for it to be dissolved at all, but perhaps that is a step too far even for this government.
Whilst what fred says is quite true, and the Fixed Term Act can be repealed or amended, what I don’t quite understand is that you accept the need for a super-majority with the fixed term act and presumably are happy with it, but do not do likewise for the press regulator act. My own fear is that this is now the second lot of proposals that apparently needs a two third majority in Parliament and it will not be long before some bright spark (aka a "special advisor") suggests that since it works well enough with those two the principle may as well be extended to everything else Parliament does.