Case in point: my Poker 2 is light and yet it is plate mounted therefore giving out an impression of a very solid build. Compare Poker 2 to HHKB and at half the price, HHKB feels like an expensive rich-man toy.
This all comes back to the same debate HHKB vs RF. Case mounted vs. Plate mounted. Either you like the warmer feel of the HHKB or you prefer a more isolated solid feel of the RF. There are reasons people prefer either or both. Some people don't appreciate the qualities of the other and some do.
If it was a kids toy, it certainly wouldn't sell so as inconceivable s it might seem, just because YOU don't like it, a lot of others might. At the same time, you only have to see how many HHKBs are flipped hours after they're tried to see that it isn't going to be liked for everyone. Whether that be layout, switches or general feel.
