Obesity CAN lead to problems. Your use of the word “does” is incorrect.
Overweight people are not any more required to be “healthy” than anyone else just because you don’t like to look at us. You can’t say “people should mind their own business” and then follow it up with “but I’m not going to, lose weight, you’re obviously unhealthy.” You have no idea how healthy someone is REGARDLESS OF THEIR SIZE. Period.
Saying that you’re bored or that you’re too good to talk about it or that the conversation isn’t worth your time just indicates to me that you have no good argument for what you’re saying.