Just open your eyes and you can see that people who don't speak the local language pay more than people who can communicate in Thai. I live here and I see it every day.
Onions and vagina are totally different words in Thai. If it sounds similar to you, I recommend taking lessons with an experienced Thai teacher so that this won't happen again. 😀
Speaking Thai is my treasure and big advantage. I don't need an excuse.
I just feel sorry for people who are not interested in learning the local language of the country where they live. I am here for 20 years and I'm proud of being able to converse with locals. It's fun to understand people and be understood. You get in touch much better to the Thais and get to know people you would never have met without speaking the language.