Yep, there seem to be a lot of people these days think any effort 'counts'. Similar thing is people who recycle, but can't be bothered putting the right thing in the right recycling bin.
In some cases any effort does 'count'. Eg turning off one light. In some cases making some effort is just a waste of your energy and even makes things worse (eg plastic bags in the paper recycling means the whole bin load may get chucked).