Not necessarily wrong...I see some of the same trends...I can tell you that I make Frankens all the time for my personal use. I use Pam cases and a strange myriad of parts....Having said that, I dont post my mods or builds as they are not "mainstream" and not for the faint of heart. Maybe more of the experts at modding etc. are not posting or have moved on?
Not sure, but there is a new crop of new buyers/members and to your point above, they are looking for gens at rep prices...