I very, very rarely contribute to any of the discussions on here, preferring to just sit in the background & see what's happening out there due to no time for modelling. But for all the lack of modelling time, I do still keep buying the offerings from IRM that are relevant to my hoped for modelling time frame if & when retirement ever arrives.
I am a little surprised, if I read the above comments correctly, that IRM switched from having correctly spaced on earlier items, such as the ballast hoppers, cement bubbles etc to changing them to UK standard gauge spacing on the Bulleid wagons, as the buffer spacing would only really be a problem for those that are using 3-link couplings. IRM goals have always appeared to me, as a person standing very much on the sidelines, to be that of heading for ever greater accuracy, such as pushing the bogie frame sides out on the MkIIs & having the Bulleid wagon frames correctly spaced. I suspect that 95%(?) of us probably stay with OO scale track, because, like in my case, life is too short now from where I'm standing to start building scale 5'-3" track or they just want to get some track down & start running trains & having fun. Fun after all is supposed to be what all of this is about?
I'm certainly not going to stop buying IRM models in light of 'buffer-gate', but I do like consistency. My own preference would be to stick with correctly spaced buffers, but I wouldn't object if two sets of holes were cast into the chassis to allow UK / Irish spacing, but that does seem to be a case of pushing things close to the edge when trying to cater for every modeler out there.
You could then start to argue that all models should come with 3-link couplings ready fitted & sprung ones at that, because the prototype ones are. Oh & why weren't the buffers on the Bulleid wagons sprung? Oh & tut, tut, the side doors are fixed.
I generally think that IRM manage to walk the right path through the minefield of modelers & if anything I think perhaps that they are trying to pack too much detail in, there currently appearing to be an arms race in fine details & DCC features in the 4mm world, but then I'm a self confessed luddite & fossil fuel burner . . .