Who knows? People hear all kinds of rumors, some of them based in truth.
The statement
"The L400 was supposed to be a 4343 with an internal crossover only. Like the L300 with internal only, vs the 4333 who has the option of being be-amped, they never managed to make a 4way passive crossover that was good enough at that time, with the technology at the same time." is kind of suspect because they already had the
3141 but they very well may have decided that it wasn't good enough for the Consumer market.