So far, my first impressions are negative. If you have normal adult sized hands you're going to have a difficult time with the capacitive buttons. I happened to have a phone stylus that the tip fits perfectly in the little dimples and it makes operating the tama bearable. That said, they're very sensitive, just specific. I'm too scared to try removing the faceplate to mill it flat at work and make it easier for my adult thumbs to use- I'll let someone else give that a go. The device would be much easier to use if they had made the front smooth and flat as it's VERY receptive when contact is made in the dimples.
This coupled with the bizarre text entry choices on the Tamagotchi on makes for an awful experience inputting the letters.
Ahh, these things are all unfortunate - and unfortunately they're what I was concerned about due to the removal of physical buttons.
At least there's a passable workaround if you have a capacitive stylus handy - that's a top tip, and one that I'm sure we'll all be sharing around for years to come! (I have the official Nintendo Switch one handy, myself, so I might have to use it here, too.)
Thumbs grow,Dont you think? Tama is designed for Kids (especially Girls) So i think a teen or a kid can use that.
It will probably be fine in that case, but as
@cobratala~goddess of necrocy~ points out, Tamagotchi ownership isn't exclusive to that audience - keep in mind that Bandai often leans on nostalgic adults like us older fans to keep the brand alive and to pass it on to the younger people in our lives (and often to keep those younger people's Tamagotchis alive, now, too

).
I have small hands myself, but that doesn't mean that poor interface design that excludes part of the audience (again as cobratala pointed out, a part of the audience that can much more easily afford them) is ok as long as it caters to
some of the audience - the result is ultimately a device that's going to be somewhat divisive due to people's differing tolerances of the usability of capacitive touch-panels. It's rare for a Tamagotchi experience to be subjective due to the input method.
Don't forget that, regardless of age, nobody has problems with the physical buttons on any model of Tamagotchi, from the original Gen 1, to the Nanos and Minis, to the colour models, and sometimes those buttons are
tiny. Capacitive panels don't respond in the same way as physical buttons.
Also, it seems to sense pressure differently. I'm not sure what is going on but it doesn't feel consistent. Sometimes the lightest of brushes registers sometimes not, and same goes for more intentional touches. But it doesn't feel like it's faulty- I think it's intentional- when I figure out what's going on I'll share.
"Inconsistent" seems to be the watchword for capacitive touch in general, I find - on some devices things are offset slightly to one side, on others the inputs are delayed, on others still they won't pick up touches at the edges of the screen but are fine closer to the middle, and so on.
It is a pity that pressure-sensitive resistive multi-touch panels never really caught on, as resistive touch is much more accurate but is unfortunately strongly associated with only having one or two touch-points even though that's not actually true. Though perhaps that wouldn't have helped here, since it would have only applied to the screen anyway!
That noted, I'm loving the camera feature. I used a rusty washer and a coworker's earring to make my tamagotchi a bowl of ramen xD
Ok, that's hilarious.

It sounds like they've implemented that well - a plus considering the input issues!
Thanks so much for sharing your experiences so far - knowing about the touch issues going in will certainly be helpful for me, and I'm sure that it will be for others as well. And we can't forget that top tip about making ramen, either.