No, it is not rude to speak English in Amsterdam. English is widely spoken and understood throughout the Netherlands, including in Amsterdam. Dutch people, in general, are known for their proficiency in English, and many of them use English as a second language in daily interactions, especially in cities like Amsterdam where tourism and international business are prevalent.
Amsterdam is a highly diverse and cosmopolitan city, attracting people from various backgrounds and cultures. As a result, English has become a common language for communication between locals and tourists or expatriates.
While many Dutch people are happy to converse in English, it is still considerate to learn a few basic Dutch phrases or expressions when visiting the country as a sign of respect for the local culture. However, you will likely find that speaking English will not be seen as rude or offensive but rather as a practical and widely accepted way to communicate in Amsterdam.