The people who notice savings will be the people who had the money to spend in the first place and who chose to spend that money.
A lot of people, never noticed their spending, as it was frittered away slowly over the month until their next payday. Hence why "pay your self first", I.e putting money into your savings like a bill on payday is such good advice.
Some had the money to spend but have always been frugal, preferring to save.
Some never had the money so prices going up and the withdrawal of offers means that they are having to spend even more of their low income on food.
I think that many people in the double income bracket waste money and I always take it with a pinch of salt when they talk about needing two incomes to survive. Yes, some lower paid people absolutely need two incomes to survive and then still live hand to mouth. Others have just grown accustomed to spending up to their income level and even with two decent incomes, spend up to this.
I'm in the non existent income camp who is noticing food costing more and who didn't do much anyway that actually cost money. I will save on petrol only, still paying for a dance class as it's via zoom at the moment and I had already paid in advance for my kids termly activities. Didn't do nails, hair cuts etc as a regular thing.
Eating out came from days out budget and that's not every month and if I didn't have the money to put into that budget, then I didn't.
My bills are kept to the bare minimum already. If I suddenly came into more money/income, I think I would be the same.