Keeping the existing controller is a real option
Nintendo lists the original Nintendo Switch Pro Controller as compatible with Switch 2. For someone who already owns a working one, the starting decision is therefore whether a new control solves a specific need. Try the supported existing arrangement with the games you intend to play. A new console and a new controller can be separate purchases; you do not need to replace both simply to make their names match.
Name the additional action
Nintendo's Switch 2 Pro Controller description identifies the C Button, mappable GL/GR back buttons and a headset audio jack. Pick the addition that interests you and describe its job. Perhaps a back-button assignment would keep a familiar command within reach, or the jack would serve an intended headset route. Those are concrete reasons to investigate. They are not evidence of faster reactions, better scores or a guaranteed improvement in personal comfort.
Keep the new controller on the right console
The same Nintendo page says the Switch 2 Pro Controller is only for Switch 2. That matters in a household keeping an original Switch as well. Do not turn the older controller's documented forward compatibility into a reverse-compatibility assumption for the new one. Make two device entries if you need equipment for two consoles, and check each selected controller against the system on which it will actually be used.
Give the C Button its actual context
The C Button opens GameChat's menu, but Nintendo lists additional requirements for GameChat, including internet, an account and Nintendo Switch Online membership, with country limitations. A dedicated button does not remove those conditions. If chat access is the main reason for changing controllers, verify that the intended user can use the service. If the interest is a back-button assignment instead, evaluate that task separately rather than treating every new feature as one inseparable benefit.
Choose around a repeated need
Keep the original Pro Controller on the shortlist when its supported use already covers the games and controls you need. Investigate the Switch 2 model when you can name an additional control or connection you would use regularly and its requirements fit the household. Before choosing, record the console and one desired action, then confirm the current exact product instructions. This leaves a clear reason for either outcome without a speculative performance ranking or a demand to replace functioning equipment.
Sources & further reading
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