No, they really didn’t go with that. Friends of ours have JOKA glued vinyl, it’s probably about 2mm as well. We didn’t have the feeling that it’s particularly hard.
I would never lay a floor without having looked at it properly beforehand. Glued is glued. There is no right/wrong walking feeling, only yours. For example, I don’t like glued parquet because it’s too hard FOR ME. For me it’s like concrete. Someone else sees it completely differently. Personally, I also wouldn’t glue it down because I want to be able to change it at any time if necessary. Here we have laid nearly 200 sqm of floating parquet, for example, and I find that comfortable. With the glue, you won’t die either; there are plenty of other substances in the house in furniture, doors, paints, etc. It’s mainly a matter of personal perception, so I would always want to see it myself.