I'll give you a question, please answer with step-by-step reasoning process.
Do guitarists need both hands to play?

yes
The left hand typically positions the chords on the fretboard.

The right hand plays the strings, either strumming a whole chord or finger-picking individual strings.

The position of the left hand on the fretboard changes the tones of the strings played by the right hand, so both hands are necessary.

.

Thus, the answer is yes