Feedback is the second most important thing a player can give back to a gaming company. The first is money. I've given both to zos, and I will continue to do so until I lose interest in housing, and thus lose interest in the game. I had never spent money in this game prior to housing with the exception of 3 years of eso plus and the banker/merchant/occasional experience scroll. Since housing, however, I've happily found many things to support the game and spend my money on.
I'm glad there are numerous posts daily about the low item cap. It means people care enough to log in and write a complaint. Some complaints are worded more eloquently than others, but at the end of the day it's still feedback, and like our money it's a gift that I sincerely hope zos is not taking for granted.
The first day that goes by on this forum without a complaint about the housing situation will be a sad day for zos. It will mean that avid "complainers" like myself have lost interest in ESO housing and we've found something else to spend our time and money on.
So I disagree wholeheartedly with the OP. I think the complaints are a good thing, and to every player who comes on here to voice their concern about the low item cap, please do not be afraid to speak up and let zos know how you feel. The majority of the fellow housing peeps like myself support you.