Do I really need different glasses for Bordeaux, Burgundy, and white wine?

Specialist communities are split. Brands like Riedel argue varietal-specific shapes meaningfully change aroma and perceived acidity, and many enthusiast-subreddit users agree the Burgundy/Pinot bowl in particular makes a real difference. Others on r/wine argue a single well-shaped universal glass covers 90% of use cases. If you drink across styles, one good universal plus a Burgundy bowl is the most commonly recommended compromise.