Yes; I have read a fair few comments in various places saying basically what you are saying.
My standard "line" is that high altitude (i.e. Eurocontrol flight plan) IFR without oxygen is a waste of time.
Not just due to situations like you mention, most of which can be hacked on a Z if you have a nice big GPS running a "real" VFR chart allowing you to wiggle your way up in some little triangle of airspace, while you sometimes furiously work the radio to pick up your IFR clearance before you run out of uncontrolled airspace, but more importantly enroute, where non-oxygen flight just puts you straight into IMC below 0C, in most of N Europe, summer or winter.
Obviously one needs the operating ceiling but even an Archer can do ~ 14000ft (with some engine instrumentation). Having oxygen is an absolute revelation which makes most fresh adopters wonder why they went without it for as long. On my first long trip (Spain in 2003, VFR) I had one look at the maps and bought an o2 kit there and then.