Is it bad to type with 2 fingers?
Not at all, but it’s not that good.
Touch typing is the standard method in typing. It is using the 10 fingers when typing and pressing specific keys for each fingers. Most people prefer this method because it more comfortable and can help them increase their typing speed.
Community Moderator at Typesy
Using two or three fingers to hunt and peck takes much longer and allows for the development of bad habits. It is much better to keep your hands still and allow for efficient use of all fingers. Touch typing involves the specific placements of all eight fingers and both thumbs; once muscle memory is strong enough, this style allows for the typist to focus on the screen rather than the keyboard.
Alex (The Reimagined Classroom Teacher)