I can see this as a game changer in care homes. Here in the US, as an able, tech savvy patient, I have experience with virtual appointments. But they are limited to basically a video chat.
In care homes, a HoloLens or similar technology allows the doctor, via the onsite assistant, to better examine the patient. Instead of asking the patient to describe a problem with, say, their leg, the assistant can give the doctor a view of their leg and focus on possible problem areas the doctor indicates. This could be even more helpful when the patient is not only infirm but also mentally challenged.
While the HoloLens 2 starts at $3500, in the context of the budget for a reputable care home this would not be an extraordinary expense.
So, yes, I think it qualifies as a game changer.