Given how busy the trains and stations appear to be at weekends and even evenings, I think a lot of people are no longer fearful of the virus. I guess with so many people now double vaccinated, and younger people thinking they're safe, there can't be that many people put off.
Clearly in the week, it's not that people are scared of the virus but rather that they're simply working from home or have now begun to stagger their working hours.
Makes sense to prioritise leisure services now the reduced services can lead to near crush loaded trains at certain times of the day. Now football is back on, along with other outdoor events, that makes the need for more trains all the greater.