Just as seen on Orion and Dragon designs (I haven't checked on other current spacecrafts), there are a lot of benefits from using touch-sensitive panels instead of traditional electrical switches.
Some benefits might be:
- Less wiring and less clutter, hence more space in the module and less weight
- Less risk of electrical/mechanical malfunction, electrical fire, etc.
- More intuitive interface
- Ability to update firmware/software
- Language translations on UI (could come in handy for multi-cultural teams)
- Many others...
Now, having said that, what could be some potential dangers or drawbacks from using this design instead of classical electrical switches?