Not too sure about "often to a very high standard". Some of it may have been an admirable accomplishment but often pretty coarse looking.
I tend to agree. I'm one of those. It was the superb MM RTR products that attracted me back into the hobby after a long break.
There is no right nor wrong, just different opinions, different tastes, and different expectations. All equally valid. If I can explain. I intend to keep buying from sources such as SF and IFM because I personally have found them to be of a reasonable standard and look well "enough" for me behind MM locos. They are without doubt way better than anything I could ever build from a kit. IMHO, it seems unrealistic to compare the cost of coaches from of a production run of 8000 units, with the cost from small volume producers, and certainly unrealistic to expect the same level of detail.
If MM were producing Park Royals and Laminates in volume I would expect a notch up in detail, but just a notch. MM are not infallible either, IMHO the colour of the mk2d stock has been way off the prototype. The 2ft rule doesn't help when colour is way off, but it does help if windows are not flush glazed or door handles are absent. In the end of the day its about choice and these small producers of RTR stock make models available that enough folk want to run on their layouts. Enough folk have voted with their feet and 'wallets'
It's ironic that this discussion is actually a symptom of the variety and choice of Irish RTR stock now available - but a dream only 20 years ago. How our expectations have risen? Lets blame MM for raising the bar so high.
PS: Apologies Warbonnet, posts crossed as I was typing and took a few phone calls.