Only those who push the bike hard, really hard, could ever notice what Heine is discussing. Getting guys like that to agree about anything will never be easy. Even coming up with language to describe how tires feel is not easy and getting all in the room to use same language is unlikely.
MTB tires we used on skinny rims in 1989 are nothing like tires available now. Not clear to me what could come from talking about tire/rim combinations from thirty years ago.
My own recent experience is that 35 and 32mm tires on 13mm internal rims do feel a bit squirmy. Not a big one. They do feel better on wider rims. 28mm tires that never did a thing to complain about on 13mm rims do feel nicer on 17 or 19mm rims. But then I've a set of Jan's own tires @41mm (advertised as 44) also mounted on 19mm rims and they feel just great. Not going to buy and build another set of rims to find out if there are higher levels of perfection.