@Doublestar but who is suggesting that? 
It's not about religiously checking online every morning at 7am to see if there are any new words with racist connotations.
At best it's about being aware and at the least it's about 'I didn't know but now I know'.
Last year there were hundreds of articles online about all of this after the massive drive to 'educate yourself' about every day racism, systemic or structural racism and becoming anti-racist. You'd basically have to only ever use the internet for Mumsnet to have missed it. (Because MN is this strange bubble of the internet where apparently none of that happened and even if it did it doesn't apply to us Brits because didn't you know we're not America and we don't have a racism problem?).
I had no idea that in eenie meanie, it wasn't always Tiggers they were catching. And now I do. Do I know if it's offensive over in the UK when we apparently used Tiger before it was replaced with a racist word and then replaced again with a bouncy disney character? Not really. And I'm not going to spend time trawling the internet over it because I don't even use it so it's a waste of time (for me).
But if I did use it, and someone said it had negative connotations and could offend people then I'd apologise, and I'd stop.
Just like I wouldn't call a gay man a fag even though a fag in the UK is a cigarette because I know it's an American slur.
Fag and uppity are probably good examples to compare. The difference is that "fag" went from Britain to America (and eventually became a cigarette here while eventually becoming a gay slur there) whereas "uppity" came from America to Britain and eventually became associated with a racial slur there.
And to like, hammer home the point, I don't think anyone expects everyone to be an expert on every single word. But I don't think it's a bad thing to stop doing or saying something completely inconsequential to you if it hurts or offends or negatively impacts a minority group? It's not chopping of your own arm or losing half your wages - it's basic respect to another human being and it boggles my mind why some people are so completely against wanting to do this?