To me, using a trackpad or having to carry a mouse around when trackpoints exist would be a massive downgrade in comfort and usability, comparable to e.g. not having a battery.
Thus, as trackpoint uptake from other brands is almost nonexistent, I'll swallow whatever crappy decision Lenovo comes up with in new laptops. They would have to do something exaggeratedly egregious (no battery? no USB ports? That kind of thing) for me to even consider the competition.
It's sad, but as bad as it is that Lenovo makes these changes, to me it's even worse that other brands don't even bother to offer a TrackPoint in at least some of their lineup, considering that it takes negligible space and the inconvenience for people who don't use it is near zero.
Add to that the braindead half-size arrow key design of most models (often paired with a loss of Home/End/PgUp/PgDown keys, thanks a ton Apple) and already there's a comfortable gap between ThinkPads and most other laptops. HP seems to be an exception here, and you'll have to go larger than the 12"/13" range to even find any options there.
I have been keeping an eye out for options of operating the pinter device from a mech without having to ove from the home row.
There are rotary encoders, sensors you can put on the keyboard itself if you make it small and mobile enough, I think I saw something trackpoint-like at some point as well, but nothing fundamental so far.
Even if you follow along models with a similar physical footprint as each series has incrementally shrunk over generations (say, compare the 2020 T14 to the t440s).
I've had enough Thinkpads that I lost counter over the years but my next laptop will be of another brand.
Hopefully I won't need a new one until one of the more open alternatives come with a decent 13-14.5" model with 2k display.