Unfortunately, that article has several errors.
For one thing, you don’t have to touch the Schlage logo just to unlock the door on the Sense model. This is a difference between the two models, and one that customers asked for. (The Manual itself is wrong in its instructions and you can see it’s clearly a page copied from the older model as it’s using the wrong picture as well.)
They also definitely don’t “have the same installation process” because one works with HomeKit and one works with Z wave or zigbee. The lock is put on the door the same way, but the pairing process is quite different.
Also, the two models look different, which will be important to some people. They are also different sizes, again important to some people.
One key difference that was very important to me personally is that the Sense model allows you to select the length of time for the autolock while the Connect model is fixed at 30 seconds. I use a wheelchair and can’t get through the door in under 30 seconds. Again, the Sense is a newer model and just has some additional features that the Connect does not.
You’re quite correct that the most significant difference when First selecting between the two is that one will work with HomeKit but not with SmartThings, while the other will work with SmartThings but not with HomeKit. So most people will not be able to use both, they will have to choose one or the other. But that certainly is not the only difference.
there are several manufacturers now like Leviton who are making two models of a device which do look identical, even using the same case, but where one works with HomeKit and one doesn’t. That’s not the situation here, however. The Connect is an older model which can work with Z wave or zigbee. The Sense is a newer model with several new features, but can only work with HomeKit. And of course they look different.
Submitted with respect.