You need to remember the "permanent government" of the civil service. They come up with a fair few ideas the politicians have. Bear in mind that pension changes are always more likely to affect DC pensions, as all the civil servants have unfunded DB pensions.Can the government be trusted? No way. I can't wait until Enda and Michael N are gone.
Of course there is no single "the government". It changes over time. And if you think "the government" is going to do everything as you wish or else they are not trustworthy you're in for a horrible time of it.