Yes. Most people don't use it, because most developers (including Apple) don't implement it very well, and it unnecessarily complicates the UI for only little benefit vs. stuff like long press. Even the keyboard trackpad feature, has been replicated in iOS 12 with long press of the space bar. I personally tried to like it but after 3 months of trying, I finally shut it off for good. There is not strong consistency with its implementation, not even from Apple.
And now with brand new 2018 models, we have a mixture of 3D Touch endowed and 3D Touchless models, which just further confuses things.
In 2018, after many, many years of Apple (half-heartedly) trying to make it work, it's clear Apple has failed to make it a key feature.
I believe, or at least hope, the Xr is the beginning of the end for 3D Touch. Good riddance.
BTW, dropping 3D Touch could potentially drop pricing of the OLED models. At least according to Ming-Chi Kuo, the introduction of Cover Glass Sensor (CGS) technology is what led to the omission of 3D Touch in the Xr. CGS has several advantages to their prior LCD technology. While CGS itself right now is more expensive, it also potentially allows Apple to cut costs overall and reduce weight. However, it may be incompatible with 3D Touch. CGS was only implemented in the Xr this year, but Ming-Chi Kuo believes in 2019 the OLED models will also go with CGS.
I'm not entirely sure if it's possible to implement 3D Touch with CGS, but some people suggest it isn't. Even if it were to be able to implemented on top of CGS, I would prefer it didn't, because it would simply add cost for little good reason. I'd personally prefer to have $50-$100 cheaper OLEDs with CGS but without 3D Touch.