I can understand this view very well and have no problem with it. If a player just wants to play for fun, it's certainly a good device. That's OK for me.

The problem I have with it is that I want to improve as a player, that I want to use it for training. And depending on how intensively you do that, you will sooner or later reach the limits of the device. For the serious player these limits already start with the possible time settings, which are not flexible enough. For me they start with the fact that on the one hand it is much too weak in friendly-mode, still makes too many artificially produced mistakes in the higher setting and on the other hand can't be beaten in the third and highest setting. For a sensible training the device is therefore not usable for me. Maybe for a blitz-game, also human players make big mistakes in blitz-games. You don't notice any difference with the friendly-mode in this case. As soon as it goes beyond blitz-games, the mistakes become a bit silly for me. If the device responds with a much bigger mistake (and he did that in my test games) as soon as I have made a mistake, then it is less a training partner than a loving father who wants to give his son a sense of achievement. And for me this father-son-experience is not worth 400 Euro.

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Mein Profil beim ICCF (International Correspondence Chess Federation)
https://www.iccf.com/player?id=89948&tab=3

Hartmut, thank you for confirming my opinion in your way. I said before, if it doesn't measure your standards, don't buy it. DGT says it's your chess friend, not your chess coach. I don't think it's ment for the serious (high level) player who wants to learn and improve , but for the recreational player.