You are talking incoherently again.Yes, yes it has. So you've admitted that the sentiment is different from the actual definition. Good for you.
Fact remains that 'nationalism' by sentiment is not a negative, only by definition is it 'bad' and just because philosophers and scientists have defined it as something different from the sentiment doesn't make it automatically correct.
"Nationalism by sentiment" isn't just having pride in your nation, no matter how many times you repeat that you believe it to be. Nationalism was never just a matter of national pride. If someone holds nationalist sentiments it means they hold beliefs about the sovereign rights of their nation state. It is a political ideology, not just a sense of positivity about one's nation.