If you Lucain mains
I am not a Lucain main. I neither own nor like this champion. However, the fact remains that he is a strong contender for being the worst ADC in the game. Statistically, he's putting up an awful show.
a lot of people were complaining.
And unless the champion is actually a balance outlier, they should be ignored. There will always be a part of the League population that wants another champion to be weak because they have a bad history with the champion. That is never worth basing balance decisions on.
I'm not against it but a lot of people were sick of him when he was strong.
Sure, as people get sick of anything when it's strong and highly played. If we used this as a balancing criteria, we'd never be allowed to buff anything that was popular at any point in the past.
I understand that you're not actually advocating for keeping him weak, but I think it needs to be established that the people who do want him weak aren't worth listening to unless they can present an actual design reason necessitating keeping him weak.