It's not that the advice is necessarily 'crappy', it's more that it's no longer current. You might be looking at an article which is only a couple of months old

It's not that the advice is necessarily 'crappy', it's more that it's no longer current. You might be looking at an article which is only a couple of months old but is already out of date because some lib (like react-router) has changed, or it's considered 'the wrong way' now (when it was 'the correct way' a couple of months ago).