I guess if I had to be honest... yes, I'm calling the Note... the S-Pen more specifically... a gimmick now-a-days. LOL
I'll say it over again... I've owned the Note 8 for 3 years... owned the N20U for a year... loved/love each phone. And I actually used the S-Pen a lot when I first got my 8. Honestly for the rare occasion of Note taking. But I did use the the Pen a LOT for interestingly enough translation of texts with Bixby Vision pointing the pen to any text on the screen whether in a doc or in a pic and could be handwritten text and it does a better job than Google Translate even 4 years later... Japanese to English. Chinese. Korean. Spanish. Even Russian. But with the N20U... haven't used the pen once for any note taking except once just to test it. I can use Bixby Vision to translate without the pen anymore.
I will make an uneducated guess and say a small fraction of Note owners, that actually pull out their pen every day or two to use as their regular input device like you would a mouse. I think most owners... I doubt many pull it out even once a week.
Why write when you can dictate... One click to your Samsung Note app just like you pull it up to use with S-pen, go to text mode and press the mic button on your keyboard and dictate your note faster than you can write and probably with less error.
The 1.6" display and the Flip is also a gimmick too. But I bet more people will get more use and benefit out of it than the pen.
But I am basing it on my own use. The only time I pull it out is to show it off. "Hey check out my S-Pen! Hold it! Click the tip a few times.

Cool eh?"
The base Note 20... they cheapened the construction with the plastic back cover, the lower spec display, camera, etc over the N20U and sell it for $1000. The Flip 3 looks like it's better designed/contructed, 120hz display, the two 12mp cameras and the folding screen and to be able to fold the phone... I think the specs and tech I stand by my last comment in that it make it a better $1000 phone than the Note 20.
If the Note 22 Ultra does come out I'd probably get it. It will be for if they keep to the design language of the squared look and thinness over the S Series and the possibility that it could be the last year of the Note. But it really won't be because of the pen.