That's true, the state pension is tiny. So small it has to be topped up with other benefits if it's all you have, especially if you're renting as the state pension usually isn't enough to cover rent. Some people don't even qualify for the full state pension.

But a large number of pensioners have a ridiculously tiny private pension (or none), so the state pension is a large and essential fraction of their income and the triple lock remains relevant to pension-age voters.

Many pensioners have a spre property by one means or another (often inherited - "accidental landlords"), which they rent out to supplement their pension. As rents have tended to go up with or even faster than general inflation until recently, this buffers the effect of inflation on those pensioners too.