It also even depends on when your flight is. E.g. I have seen Ultimate-Lounge/Corner in Paris full at noon, when you have many flights depart from CDG to North America.
However, since I almost only fly CDG-PEK/PVG/HKG/SIN (all East Asia flights depart at late evening), I have barely seen Ultis more than 4 at same time in T2E K or L, and in most cases, I can enjoy a total private area (since there’s nobody else). In compare with outside, this is more or less kind of “La Premierč”.

As much, from my personal experience I would definitely continue to maintain my status.