oh my god… relax. they’re called allophones, it’s when two different sounds are treated as the same phoneme in a language. so like whether you make a click sound with your K or not, it’s still a K right? well in some languages it would be a totally different phoneme. but to you, whether you can hear the difference or not is irrelevant to you because it either way it just means K. that’s what they’re talking about. can you chill with the “you should be ashamed” and try more of “i should generously try to understand what they mean and ask questions to get there instead of raging at any perceived weakness”