You mean the breakout board? You can root with a breadboard but the breakout board is strongly recommended and there are lots of people ready to send you a kit or lend you their board.
Without Valetudo I wouldn't have considered buying a robot vacuum in the first place.
The software is mature and the community is available to help new users root their robots. Just do not expect it to work with random robots (stick to supported robots) nor for every feature to be supported.