Given how recent that change was, the increase under the previous government and now the decrease, we don't have any up-to-date data on whether it is influencing decisions on people right now to stay or leave the workforce.
However, when you look at OECD countries, the trend is to allow and to encourage people to work longer and to not force retirement at 65, simply because we're all living longer. It doesn't mean that someone can't retire, but why would you force them to leave the workforce at 65? We don't see any sound policy rationale for that.