Key point here:
Our situation owes a lot merely to high public trust in vaccines. We don't really have a sizeable anti vax political movement in the uk. Thats got fuck all to do with our current government really but a long term national love affair and trust in healthcare professionals and the NHS.
Having high levels of vaccine uptake has meant we were in a position to take a choice about opening up earlier.
Germany which has particularly worrying levels low vaccine uptake due to a large anti vax sentiment combined with a lack of fear of covid due to low case rates. It has really meant that opening up as much or as early as the uk isn't really an option on the table.
Given that other countries have, at times, relied on Germany's excess bed capacity when they've struggled, it does make it more of a Europe wide concern because if Germany start to have real issues it has impact elsewhere (this neglects to mention the realities of a landborder and cross border working also being relevant to a high case rate in Germany).
If Germany has significant issues this winter, there will be a ripple effect throughout the EU even for those who don't have a covid problem right now.
And there there is the economics.
The UK economically has to have Christmas and I don't think this should be ignored in terms of cost to health from poverty. Thankfully I don't think it a real risk here in the UK.
If Germany does have that big economic hit through lockdowns and restrictions in December, then there are big ramifications (including for the UK) and that includes on health indirectly.
So I do think its fair to say this is a Europe wide problem for that reason. (Which actually does include the uk albeit to a lesser extent).