I don't get it!!!

How can a company measure the English language fluency based on the years of experience.. like if it was more than 5 years experience then there's no need for an english test before hiring, but if it was less then the english test is a must.

How can the practical experience be a measure of language fluency.. logically speaking!

How can it be based on this lame reasoning, rather than looking for qualifications, certifications, speaking skills, education, or any International English Language tests which were previously done!

I really don't get it!