I would avoid the ST combination mesh WiFi router plus hub devices. Based on the following, it probably won’t be long before those disappear as well.
It is an uneasy time right now to be buying a SmartThings hub. Too much uncertainty on what the future is going to look like, IMHO. If you can afford to wait a few weeks/months, perhaps things will become more clear. If you need something sooner, perhaps look for used v2 or v3 ST hub. Or, check out other home automation platforms altogether, depending on your needs.