So... in past years we had flu, and no modifications to behaviour, and an NHS crisis.
This year we have covid, with some modifications to behaviour (masks, WFH, etc) and an NHS crisis "no worse".
Your conclusion from this is that the modifications to behaviour make no difference, rather than that the underlying potential for impact is worse with Covid. You seem to be discounting the possibility that without the current modifications to behaviour, the pressure we currently see in the NHS would be even worse.