The latter [the Tory Party] have been surreptitiously destabilising it ever since.
No they haven't. It is patients that have been destabilising it as the latest mantra imploring them to protect the NHS suggests.
The latest plea, now that Covid hospitalisations seem not to be rising at the same rate as new infections, seems to suggest that we must all steer clear of the NHS whilst it tries to catch up from its de facto closure of the last fifteen months. The implication of this is that, as well as not becoming ill, we should also steer clear of any activities which may see the need for medical attention, such as sporting activities, travelling anywhere, taking a bath or cutting up vegetables. It's a bit like a bus company imploring its passengers not to wait at bus stops. That way, their buses will not run the risk of being late as a result of having to stop to pick up passengers.