No, that is not true. Here is the real story behind the 8351 offset LED.
Back when we were developing the original 8351A, we were debating which is the "default" orientation for the speaker which would be indicated by the orientation and placement of the GENELEC logo along with the LED. During the time the moulds for the cabinet halves were made, we strongly believed that the horizontal orientation would be the default one and the logo was placed below the coaxial driver with the LED sitting right next to it, making them a harmonic looking pair. Later on, after many discussions between the R&D team and our industrial designer, Harri Koskinen, we came up to the conclusion that the default orientation would be the vertical one instead. But now the logo and LED were placed wrong!
Changing the placement of the logo was easy and not too expensive because it is just embossed on the surface. The LED however, requires a through-hole with three wires running to it from the electronics PCB located inside the cabinet. Every aluminium cabinet 8000/6000/4000 series (except for the very first 6040A and the later 6040R) model has had the LED placed through the front panel of the cabinet, making it easy to install and seal against air leaks. Due to the construction of the 8351 cabinet, the lips/covers on top of the woofer drivers are quite thin and were not designed to house the LED. The racetrack woofer sits right behind the lip so there is no room to fit the LED or run the wires to it without causing other issues. Now we were facing a dilemma. Should we redesign the front half of the cabinet so that the LED could be placed next to the logo, causing further expenses and delays for the project, or just accept the fact that the logo and the LED would be placed far away from each other and go forward with the already many times delayed product launch. You know which option we chose.
Remember that back in 2013/2014, we (honestly) had no idea that the 8351A would become so successful or that we would be later on making three more siblings for it. We did not even coin the name "The Ones" until in 2017. So, fast forward to the time we had the first drawings made for the 8331A and 8341A, we were again facing the same logo and LED dilemma. Should we now relocate the LED next to the logo or should we continue with the same 8351A style for a uniform family look. Again, you know which option we chose. Later on with the 8361A, we did not even have the discussion anymore, the choice was obvious. However, for these three models we decided to move the LED position slightly upwards, to the vertical centerline of the cabinet, for a more symmetrical appearance.
Now, someone might ask that why did not we do the same change for the 8351B. The reason is that since 8351A and B revisions are sharing the exact same front cabinet half, as well as of course the mould to make ones, and we did not want to have any production/delivery gap between the revisions, we had to keep the front half design exactly the same - with the offset LED placement. Having another mould made just to have the LED position changed, which by the way are awfully expensive in this size, was simply not justified. The end.