>>510305319A portion of it will be selection bias. Social media has a habit of only showing you the most sensational garbage for hits. If an Indian restaurant cooked ordinary meals in a hygienic manner, do you think anyone would put that on TikTok? Hell no, no one's gonna click that.
Though personally I know someone who went to India for 3 months a decade ago and he said it's pretty much what you see in webms. He could only eat food from certain places because otherwise he'd instantly get sick.