Yes, absolutely important. Selfishly I list these primitive baby step examples I use.

and American English and sometimes my merchant slang (I'm 72 years old).

I communicate on Telegram, LINE, WhatsApp as mandatory. As my main customers and suppliers, agents (99% are in other Countries), Americans in the USA usually do not do cold calls with me. But people, companies in other Countries seven days a week.

I say yes more languages the better, yes we will pick up some spam along the way, comes with growth.