There are a few advantages to having a flat, non-angled headstock. First, it can make the guitar more comfortable to play, especially for players with smaller hands. Second, it can help to reduce string tension, which can make the guitar sound brighter and more responsive. Third, it can make the guitar more visually appealing.
However, there are also some disadvantages to having a flat, non-angled headstock. First, it can make the guitar more difficult to tune, especially if the strings are not properly lubricated. Second, it can make the guitar more susceptible to neck warping, especially if the guitar is not properly humidified. Third, it can make the guitar more difficult to restring, especially if the strings are not properly anchored.
Ultimately, the decision of whether or not to choose a guitar with a flat, non-angled headstock is a personal one. There are both advantages and disadvantages to this design, so it is important to weigh the pros and cons before making a decision.