Hope dies last, so maybe at the end things will not be as bad as we think. I still think we will see some reshufling of the fleet and by the end of 2027 when all aircraft should have been reconifgured...somehow don't see this timeline to be met... things might look like this:
10 A350's (5 planes seems to be a too small sub fleet, that's why I could see a reduced A330 fleet)
8-10 A330's (I have a feeling the fleet will be reduced and moved around the group, for instance for growth of Eurowings Discover)
12 B77W's (I still have this little hope that LH will take the 77W's to compement their 77X fleet and LX will get A350-1000 instead rather sooner than later)

Let's face it, there are some routes where F is not a big seller such as YUL or other destinations where it depends on the season. Hence, 1 row is better than not offering the product at all on some routes, hence if we will only see this on the A330 that per my theory will also end up with less aircraft than today in the fleet this would be perfectly ok. However on the majority of the fleet LX should have 2 rows especially now with the reduction to 3 (3.5 seats per row. Maybe they should go over the books agan and just have 3x larger suites all at a simmilar size or have the option to sell it as 1 or 2 seperate suites (old SQ A380 F).