Let's just say I may not have gone to the well as often.
The lesson I learnt, and have since acted upon quite a number of times, from
The Pudding Guy is that opportunities or "wells" regularly occur.....
but that you need to act, and that to make the most of the opportunity you often need to be creative and think laterally.
Some are small, and some can be massive. Some can last a while, and
some are only fleeting. But the "well's are there....and will be there in the future.
Some are not available to all, such as this promo.....or for example the ATO pay tax by CC which is a boon to those running their own business that have large tax flows.....but opportunities will arise and often can be made bigger by being "enterprising".
The OP obviously checked the T&C (have not seen them myself, but there appears to have been less that the Amex Everyday Promo which initially had little (though was toughened up part way through), but was also under the more extensive T&C of the Amex MR Program) and abided by them, and as I have certainly learnt as well T&C can be your very good friend if you understand them for a particular promo, follow them and are entrepreneurial with them.
I am an unashamed
Points Runner. Always on on the hunt for opportunity.
I know in my dealing with banks that they have no compunction about enforcing T&C's in their favour. ie late payment fees, over limit fees and the like all of which are way offer the top.... and what justification is there for the very high interest payment charges on credit cards? Some may call such interest charges as one of the biggest rorts in Australia. But if you do not pay by the due date the bank will enforce the T&C and charge you interest.