A word-for-word translation often misses what local shoppers search for. The localizer adapts words, units, sizes and tone for each market.
Local search terms, metric units, regional sizes, spelling and the right level of formality all change from market to market.
Each localization comes with a list of labeling and compliance facts to check for that country, as general guidance.
Should a native speaker still check it?
Yes. Have a native speaker review the copy before you publish.
Does it give legal compliance advice?
No. It lists what to check. Confirm local rules with the marketplace or a professional.