A few years after the LVMH takeover, I'm gonna say "no" the OP.

Is there any evidence at all that Rimowa "quality" has changed meaningfully since the LVMH acquisition? All I see in this thread are assumptions (LVMH is a fashion brand, they are doing more fashion things, quality is surely down) instead of actual product testing and real world experience. I own pre LVMH and post LVMH Rimowa luggage, all work great. They changed the design of the velco straps on the divider a bit, but beyond that, all the bags work great. My first Rimowa was a "Salsa Essential" IATA Cabin model in polycarbonate, my most recent one is the Cabin Plus in Titanium Aluminum, and I have a few check in sizes in between. All continue to work great.