It's a difficult one assuming what the "silent majority" will be, we simply do not have those data.
Maybe the bulk of 4mm Dapol class 22 and Western owners will not post here, or even read anything here.
Some will have bought their models to collect and/or display, will never need to run or get inside them as they dont have layouts. For these people the models are perfect.
Some will run DC only, will not need to get inside to fit chips, fit the outside headcode labels and run, again perfect, for their situation.
For those that need to run DCC, will need to dismantle:
Some will have perfect models - some won't. That we have established. I seriously hope the former are in the majority, but the issues highlighted in this thread rightly need airing, as there are solutions to them and should not put off potential Dapol purchasers. They are covered by a generous warranty and the service from DCC supplies is exemplary, no one has stated that this is not the case.
Neil